OK, let's crack this. We're given 48 and our task is to multiply it by 489. Essentially, we'll be adding 48 to itself 489 times.
Step 1: 0 + 48 = 48
Step 2: 48 + 48 = 96
Step 3: 96 + 48 = 144
Step 4: 144 + 48 = 192
Step 5: 192 + 48 = 240
Step 6: 240 + 48 = 288
Step 7: 288 + 48 = 336
Step 8: 336 + 48 = 384
Step 9: 384 + 48 = 432
Step 10: 432 + 48 = 480
Step 11: 480 + 48 = 528
Step 12: 528 + 48 = 576
Step 13: 576 + 48 = 624
Step 14: 624 + 48 = 672
Step 15: 672 + 48 = 720
Step 16: 720 + 48 = 768
Step 17: 768 + 48 = 816
Step 18: 816 + 48 = 864
Step 19: 864 + 48 = 912
Step 20: 912 + 48 = 960
Step 21: 960 + 48 = 1008
Step 22: 1008 + 48 = 1056
Step 23: 1056 + 48 = 1104
Step 24: 1104 + 48 = 1152
Step 25: 1152 + 48 = 1200
Step 26: 1200 + 48 = 1248
Step 27: 1248 + 48 = 1296
Step 28: 1296 + 48 = 1344
Step 29: 1344 + 48 = 1392
Step 30: 1392 + 48 = 1440
Step 31: 1440 + 48 = 1488
Step 32: 1488 + 48 = 1536
Step 33: 1536 + 48 = 1584
Step 34: 1584 + 48 = 1632
Step 35: 1632 + 48 = 1680
Step 36: 1680 + 48 = 1728
Step 37: 1728 + 48 = 1776
Step 38: 1776 + 48 = 1824
Step 39: 1824 + 48 = 1872
Step 40: 1872 + 48 = 1920
Step 41: 1920 + 48 = 1968
Step 42: 1968 + 48 = 2016
Step 43: 2016 + 48 = 2064
Step 44: 2064 + 48 = 2112
Step 45: 2112 + 48 = 2160
Step 46: 2160 + 48 = 2208
Step 47: 2208 + 48 = 2256
Step 48: 2256 + 48 = 2304
Step 49: 2304 + 48 = 2352
Step 50: 2352 + 48 = 2400
Step 51: 2400 + 48 = 2448
Step 52: 2448 + 48 = 2496
Step 53: 2496 + 48 = 2544
Step 54: 2544 + 48 = 2592
Step 55: 2592 + 48 = 2640
Step 56: 2640 + 48 = 2688
Step 57: 2688 + 48 = 2736
Step 58: 2736 + 48 = 2784
Step 59: 2784 + 48 = 2832
Step 60: 2832 + 48 = 2880
Step 61: 2880 + 48 = 2928
Step 62: 2928 + 48 = 2976
Step 63: 2976 + 48 = 3024
Step 64: 3024 + 48 = 3072
Step 65: 3072 + 48 = 3120
Step 66: 3120 + 48 = 3168
Step 67: 3168 + 48 = 3216
Step 68: 3216 + 48 = 3264
Step 69: 3264 + 48 = 3312
Step 70: 3312 + 48 = 3360
Step 71: 3360 + 48 = 3408
Step 72: 3408 + 48 = 3456
Step 73: 3456 + 48 = 3504
Step 74: 3504 + 48 = 3552
Step 75: 3552 + 48 = 3600
Step 76: 3600 + 48 = 3648
Step 77: 3648 + 48 = 3696
Step 78: 3696 + 48 = 3744
Step 79: 3744 + 48 = 3792
Step 80: 3792 + 48 = 3840
Step 81: 3840 + 48 = 3888
Step 82: 3888 + 48 = 3936
Step 83: 3936 + 48 = 3984
Step 84: 3984 + 48 = 4032
Step 85: 4032 + 48 = 4080
Step 86: 4080 + 48 = 4128
Step 87: 4128 + 48 = 4176
Step 88: 4176 + 48 = 4224
Step 89: 4224 + 48 = 4272
Step 90: 4272 + 48 = 4320
Step 91: 4320 + 48 = 4368
Step 92: 4368 + 48 = 4416
Step 93: 4416 + 48 = 4464
Step 94: 4464 + 48 = 4512
Step 95: 4512 + 48 = 4560
Step 96: 4560 + 48 = 4608
Step 97: 4608 + 48 = 4656
Step 98: 4656 + 48 = 4704
Step 99: 4704 + 48 = 4752
Step 100: 4752 + 48 = 4800
Step 101: 4800 + 48 = 4848
Step 102: 4848 + 48 = 4896
Step 103: 4896 + 48 = 4944
Step 104: 4944 + 48 = 4992
Step 105: 4992 + 48 = 5040
Step 106: 5040 + 48 = 5088
Step 107: 5088 + 48 = 5136
Step 108: 5136 + 48 = 5184
Step 109: 5184 + 48 = 5232
Step 110: 5232 + 48 = 5280
Step 111: 5280 + 48 = 5328
Step 112: 5328 + 48 = 5376
Step 113: 5376 + 48 = 5424
Step 114: 5424 + 48 = 5472
Step 115: 5472 + 48 = 5520
Step 116: 5520 + 48 = 5568
Step 117: 5568 + 48 = 5616
Step 118: 5616 + 48 = 5664
Step 119: 5664 + 48 = 5712
Step 120: 5712 + 48 = 5760
Step 121: 5760 + 48 = 5808
Step 122: 5808 + 48 = 5856
Step 123: 5856 + 48 = 5904
Step 124: 5904 + 48 = 5952
Step 125: 5952 + 48 = 6000
Step 126: 6000 + 48 = 6048
Step 127: 6048 + 48 = 6096
Step 128: 6096 + 48 = 6144
Step 129: 6144 + 48 = 6192
Step 130: 6192 + 48 = 6240
Step 131: 6240 + 48 = 6288
Step 132: 6288 + 48 = 6336
Step 133: 6336 + 48 = 6384
Step 134: 6384 + 48 = 6432
Step 135: 6432 + 48 = 6480
Step 136: 6480 + 48 = 6528
Step 137: 6528 + 48 = 6576
Step 138: 6576 + 48 = 6624
Step 139: 6624 + 48 = 6672
Step 140: 6672 + 48 = 6720
Step 141: 6720 + 48 = 6768
Step 142: 6768 + 48 = 6816
Step 143: 6816 + 48 = 6864
Step 144: 6864 + 48 = 6912
Step 145: 6912 + 48 = 6960
Step 146: 6960 + 48 = 7008
Step 147: 7008 + 48 = 7056
Step 148: 7056 + 48 = 7104
Step 149: 7104 + 48 = 7152
Step 150: 7152 + 48 = 7200
Step 151: 7200 + 48 = 7248
Step 152: 7248 + 48 = 7296
Step 153: 7296 + 48 = 7344
Step 154: 7344 + 48 = 7392
Step 155: 7392 + 48 = 7440
Step 156: 7440 + 48 = 7488
Step 157: 7488 + 48 = 7536
Step 158: 7536 + 48 = 7584
Step 159: 7584 + 48 = 7632
Step 160: 7632 + 48 = 7680
Step 161: 7680 + 48 = 7728
Step 162: 7728 + 48 = 7776
Step 163: 7776 + 48 = 7824
Step 164: 7824 + 48 = 7872
Step 165: 7872 + 48 = 7920
Step 166: 7920 + 48 = 7968
Step 167: 7968 + 48 = 8016
Step 168: 8016 + 48 = 8064
Step 169: 8064 + 48 = 8112
Step 170: 8112 + 48 = 8160
Step 171: 8160 + 48 = 8208
Step 172: 8208 + 48 = 8256
Step 173: 8256 + 48 = 8304
Step 174: 8304 + 48 = 8352
Step 175: 8352 + 48 = 8400
Step 176: 8400 + 48 = 8448
Step 177: 8448 + 48 = 8496
Step 178: 8496 + 48 = 8544
Step 179: 8544 + 48 = 8592
Step 180: 8592 + 48 = 8640
Step 181: 8640 + 48 = 8688
Step 182: 8688 + 48 = 8736
Step 183: 8736 + 48 = 8784
Step 184: 8784 + 48 = 8832
Step 185: 8832 + 48 = 8880
Step 186: 8880 + 48 = 8928
Step 187: 8928 + 48 = 8976
Step 188: 8976 + 48 = 9024
Step 189: 9024 + 48 = 9072
Step 190: 9072 + 48 = 9120
Step 191: 9120 + 48 = 9168
Step 192: 9168 + 48 = 9216
Step 193: 9216 + 48 = 9264
Step 194: 9264 + 48 = 9312
Step 195: 9312 + 48 = 9360
Step 196: 9360 + 48 = 9408
Step 197: 9408 + 48 = 9456
Step 198: 9456 + 48 = 9504
Step 199: 9504 + 48 = 9552
Step 200: 9552 + 48 = 9600
Step 201: 9600 + 48 = 9648
Step 202: 9648 + 48 = 9696
Step 203: 9696 + 48 = 9744
Step 204: 9744 + 48 = 9792
Step 205: 9792 + 48 = 9840
Step 206: 9840 + 48 = 9888
Step 207: 9888 + 48 = 9936
Step 208: 9936 + 48 = 9984
Step 209: 9984 + 48 = 10032
Step 210: 10032 + 48 = 10080
Step 211: 10080 + 48 = 10128
Step 212: 10128 + 48 = 10176
Step 213: 10176 + 48 = 10224
Step 214: 10224 + 48 = 10272
Step 215: 10272 + 48 = 10320
Step 216: 10320 + 48 = 10368
Step 217: 10368 + 48 = 10416
Step 218: 10416 + 48 = 10464
Step 219: 10464 + 48 = 10512
Step 220: 10512 + 48 = 10560
Step 221: 10560 + 48 = 10608
Step 222: 10608 + 48 = 10656
Step 223: 10656 + 48 = 10704
Step 224: 10704 + 48 = 10752
Step 225: 10752 + 48 = 10800
Step 226: 10800 + 48 = 10848
Step 227: 10848 + 48 = 10896
Step 228: 10896 + 48 = 10944
Step 229: 10944 + 48 = 10992
Step 230: 10992 + 48 = 11040
Step 231: 11040 + 48 = 11088
Step 232: 11088 + 48 = 11136
Step 233: 11136 + 48 = 11184
Step 234: 11184 + 48 = 11232
Step 235: 11232 + 48 = 11280
Step 236: 11280 + 48 = 11328
Step 237: 11328 + 48 = 11376
Step 238: 11376 + 48 = 11424
Step 239: 11424 + 48 = 11472
Step 240: 11472 + 48 = 11520
Step 241: 11520 + 48 = 11568
Step 242: 11568 + 48 = 11616
Step 243: 11616 + 48 = 11664
Step 244: 11664 + 48 = 11712
Step 245: 11712 + 48 = 11760
Step 246: 11760 + 48 = 11808
Step 247: 11808 + 48 = 11856
Step 248: 11856 + 48 = 11904
Step 249: 11904 + 48 = 11952
Step 250: 11952 + 48 = 12000
Step 251: 12000 + 48 = 12048
Step 252: 12048 + 48 = 12096
Step 253: 12096 + 48 = 12144
Step 254: 12144 + 48 = 12192
Step 255: 12192 + 48 = 12240
Step 256: 12240 + 48 = 12288
Step 257: 12288 + 48 = 12336
Step 258: 12336 + 48 = 12384
Step 259: 12384 + 48 = 12432
Step 260: 12432 + 48 = 12480
Step 261: 12480 + 48 = 12528
Step 262: 12528 + 48 = 12576
Step 263: 12576 + 48 = 12624
Step 264: 12624 + 48 = 12672
Step 265: 12672 + 48 = 12720
Step 266: 12720 + 48 = 12768
Step 267: 12768 + 48 = 12816
Step 268: 12816 + 48 = 12864
Step 269: 12864 + 48 = 12912
Step 270: 12912 + 48 = 12960
Step 271: 12960 + 48 = 13008
Step 272: 13008 + 48 = 13056
Step 273: 13056 + 48 = 13104
Step 274: 13104 + 48 = 13152
Step 275: 13152 + 48 = 13200
Step 276: 13200 + 48 = 13248
Step 277: 13248 + 48 = 13296
Step 278: 13296 + 48 = 13344
Step 279: 13344 + 48 = 13392
Step 280: 13392 + 48 = 13440
Step 281: 13440 + 48 = 13488
Step 282: 13488 + 48 = 13536
Step 283: 13536 + 48 = 13584
Step 284: 13584 + 48 = 13632
Step 285: 13632 + 48 = 13680
Step 286: 13680 + 48 = 13728
Step 287: 13728 + 48 = 13776
Step 288: 13776 + 48 = 13824
Step 289: 13824 + 48 = 13872
Step 290: 13872 + 48 = 13920
Step 291: 13920 + 48 = 13968
Step 292: 13968 + 48 = 14016
Step 293: 14016 + 48 = 14064
Step 294: 14064 + 48 = 14112
Step 295: 14112 + 48 = 14160
Step 296: 14160 + 48 = 14208
Step 297: 14208 + 48 = 14256
Step 298: 14256 + 48 = 14304
Step 299: 14304 + 48 = 14352
Step 300: 14352 + 48 = 14400
Step 301: 14400 + 48 = 14448
Step 302: 14448 + 48 = 14496
Step 303: 14496 + 48 = 14544
Step 304: 14544 + 48 = 14592
Step 305: 14592 + 48 = 14640
Step 306: 14640 + 48 = 14688
Step 307: 14688 + 48 = 14736
Step 308: 14736 + 48 = 14784
Step 309: 14784 + 48 = 14832
Step 310: 14832 + 48 = 14880
Step 311: 14880 + 48 = 14928
Step 312: 14928 + 48 = 14976
Step 313: 14976 + 48 = 15024
Step 314: 15024 + 48 = 15072
Step 315: 15072 + 48 = 15120
Step 316: 15120 + 48 = 15168
Step 317: 15168 + 48 = 15216
Step 318: 15216 + 48 = 15264
Step 319: 15264 + 48 = 15312
Step 320: 15312 + 48 = 15360
Step 321: 15360 + 48 = 15408
Step 322: 15408 + 48 = 15456
Step 323: 15456 + 48 = 15504
Step 324: 15504 + 48 = 15552
Step 325: 15552 + 48 = 15600
Step 326: 15600 + 48 = 15648
Step 327: 15648 + 48 = 15696
Step 328: 15696 + 48 = 15744
Step 329: 15744 + 48 = 15792
Step 330: 15792 + 48 = 15840
Step 331: 15840 + 48 = 15888
Step 332: 15888 + 48 = 15936
Step 333: 15936 + 48 = 15984
Step 334: 15984 + 48 = 16032
Step 335: 16032 + 48 = 16080
Step 336: 16080 + 48 = 16128
Step 337: 16128 + 48 = 16176
Step 338: 16176 + 48 = 16224
Step 339: 16224 + 48 = 16272
Step 340: 16272 + 48 = 16320
Step 341: 16320 + 48 = 16368
Step 342: 16368 + 48 = 16416
Step 343: 16416 + 48 = 16464
Step 344: 16464 + 48 = 16512
Step 345: 16512 + 48 = 16560
Step 346: 16560 + 48 = 16608
Step 347: 16608 + 48 = 16656
Step 348: 16656 + 48 = 16704
Step 349: 16704 + 48 = 16752
Step 350: 16752 + 48 = 16800
Step 351: 16800 + 48 = 16848
Step 352: 16848 + 48 = 16896
Step 353: 16896 + 48 = 16944
Step 354: 16944 + 48 = 16992
Step 355: 16992 + 48 = 17040
Step 356: 17040 + 48 = 17088
Step 357: 17088 + 48 = 17136
Step 358: 17136 + 48 = 17184
Step 359: 17184 + 48 = 17232
Step 360: 17232 + 48 = 17280
Step 361: 17280 + 48 = 17328
Step 362: 17328 + 48 = 17376
Step 363: 17376 + 48 = 17424
Step 364: 17424 + 48 = 17472
Step 365: 17472 + 48 = 17520
Step 366: 17520 + 48 = 17568
Step 367: 17568 + 48 = 17616
Step 368: 17616 + 48 = 17664
Step 369: 17664 + 48 = 17712
Step 370: 17712 + 48 = 17760
Step 371: 17760 + 48 = 17808
Step 372: 17808 + 48 = 17856
Step 373: 17856 + 48 = 17904
Step 374: 17904 + 48 = 17952
Step 375: 17952 + 48 = 18000
Step 376: 18000 + 48 = 18048
Step 377: 18048 + 48 = 18096
Step 378: 18096 + 48 = 18144
Step 379: 18144 + 48 = 18192
Step 380: 18192 + 48 = 18240
Step 381: 18240 + 48 = 18288
Step 382: 18288 + 48 = 18336
Step 383: 18336 + 48 = 18384
Step 384: 18384 + 48 = 18432
Step 385: 18432 + 48 = 18480
Step 386: 18480 + 48 = 18528
Step 387: 18528 + 48 = 18576
Step 388: 18576 + 48 = 18624
Step 389: 18624 + 48 = 18672
Step 390: 18672 + 48 = 18720
Step 391: 18720 + 48 = 18768
Step 392: 18768 + 48 = 18816
Step 393: 18816 + 48 = 18864
Step 394: 18864 + 48 = 18912
Step 395: 18912 + 48 = 18960
Step 396: 18960 + 48 = 19008
Step 397: 19008 + 48 = 19056
Step 398: 19056 + 48 = 19104
Step 399: 19104 + 48 = 19152
Step 400: 19152 + 48 = 19200
Step 401: 19200 + 48 = 19248
Step 402: 19248 + 48 = 19296
Step 403: 19296 + 48 = 19344
Step 404: 19344 + 48 = 19392
Step 405: 19392 + 48 = 19440
Step 406: 19440 + 48 = 19488
Step 407: 19488 + 48 = 19536
Step 408: 19536 + 48 = 19584
Step 409: 19584 + 48 = 19632
Step 410: 19632 + 48 = 19680
Step 411: 19680 + 48 = 19728
Step 412: 19728 + 48 = 19776
Step 413: 19776 + 48 = 19824
Step 414: 19824 + 48 = 19872
Step 415: 19872 + 48 = 19920
Step 416: 19920 + 48 = 19968
Step 417: 19968 + 48 = 20016
Step 418: 20016 + 48 = 20064
Step 419: 20064 + 48 = 20112
Step 420: 20112 + 48 = 20160
Step 421: 20160 + 48 = 20208
Step 422: 20208 + 48 = 20256
Step 423: 20256 + 48 = 20304
Step 424: 20304 + 48 = 20352
Step 425: 20352 + 48 = 20400
Step 426: 20400 + 48 = 20448
Step 427: 20448 + 48 = 20496
Step 428: 20496 + 48 = 20544
Step 429: 20544 + 48 = 20592
Step 430: 20592 + 48 = 20640
Step 431: 20640 + 48 = 20688
Step 432: 20688 + 48 = 20736
Step 433: 20736 + 48 = 20784
Step 434: 20784 + 48 = 20832
Step 435: 20832 + 48 = 20880
Step 436: 20880 + 48 = 20928
Step 437: 20928 + 48 = 20976
Step 438: 20976 + 48 = 21024
Step 439: 21024 + 48 = 21072
Step 440: 21072 + 48 = 21120
Step 441: 21120 + 48 = 21168
Step 442: 21168 + 48 = 21216
Step 443: 21216 + 48 = 21264
Step 444: 21264 + 48 = 21312
Step 445: 21312 + 48 = 21360
Step 446: 21360 + 48 = 21408
Step 447: 21408 + 48 = 21456
Step 448: 21456 + 48 = 21504
Step 449: 21504 + 48 = 21552
Step 450: 21552 + 48 = 21600
Step 451: 21600 + 48 = 21648
Step 452: 21648 + 48 = 21696
Step 453: 21696 + 48 = 21744
Step 454: 21744 + 48 = 21792
Step 455: 21792 + 48 = 21840
Step 456: 21840 + 48 = 21888
Step 457: 21888 + 48 = 21936
Step 458: 21936 + 48 = 21984
Step 459: 21984 + 48 = 22032
Step 460: 22032 + 48 = 22080
Step 461: 22080 + 48 = 22128
Step 462: 22128 + 48 = 22176
Step 463: 22176 + 48 = 22224
Step 464: 22224 + 48 = 22272
Step 465: 22272 + 48 = 22320
Step 466: 22320 + 48 = 22368
Step 467: 22368 + 48 = 22416
Step 468: 22416 + 48 = 22464
Step 469: 22464 + 48 = 22512
Step 470: 22512 + 48 = 22560
Step 471: 22560 + 48 = 22608
Step 472: 22608 + 48 = 22656
Step 473: 22656 + 48 = 22704
Step 474: 22704 + 48 = 22752
Step 475: 22752 + 48 = 22800
Step 476: 22800 + 48 = 22848
Step 477: 22848 + 48 = 22896
Step 478: 22896 + 48 = 22944
Step 479: 22944 + 48 = 22992
Step 480: 22992 + 48 = 23040
Step 481: 23040 + 48 = 23088
Step 482: 23088 + 48 = 23136
Step 483: 23136 + 48 = 23184
Step 484: 23184 + 48 = 23232
Step 485: 23232 + 48 = 23280
Step 486: 23280 + 48 = 23328
Step 487: 23328 + 48 = 23376
Step 488: 23376 + 48 = 23424
Step 489: 23424 + 48 = 23472

So, 48*489 = 23472