Without delay, let's solve this. We've got 24 and we will be multiplying it by 393, that is, adding 24 to itself 393 times.
Step 1: 0 + 24 = 24
Step 2: 24 + 24 = 48
Step 3: 48 + 24 = 72
Step 4: 72 + 24 = 96
Step 5: 96 + 24 = 120
Step 6: 120 + 24 = 144
Step 7: 144 + 24 = 168
Step 8: 168 + 24 = 192
Step 9: 192 + 24 = 216
Step 10: 216 + 24 = 240
Step 11: 240 + 24 = 264
Step 12: 264 + 24 = 288
Step 13: 288 + 24 = 312
Step 14: 312 + 24 = 336
Step 15: 336 + 24 = 360
Step 16: 360 + 24 = 384
Step 17: 384 + 24 = 408
Step 18: 408 + 24 = 432
Step 19: 432 + 24 = 456
Step 20: 456 + 24 = 480
Step 21: 480 + 24 = 504
Step 22: 504 + 24 = 528
Step 23: 528 + 24 = 552
Step 24: 552 + 24 = 576
Step 25: 576 + 24 = 600
Step 26: 600 + 24 = 624
Step 27: 624 + 24 = 648
Step 28: 648 + 24 = 672
Step 29: 672 + 24 = 696
Step 30: 696 + 24 = 720
Step 31: 720 + 24 = 744
Step 32: 744 + 24 = 768
Step 33: 768 + 24 = 792
Step 34: 792 + 24 = 816
Step 35: 816 + 24 = 840
Step 36: 840 + 24 = 864
Step 37: 864 + 24 = 888
Step 38: 888 + 24 = 912
Step 39: 912 + 24 = 936
Step 40: 936 + 24 = 960
Step 41: 960 + 24 = 984
Step 42: 984 + 24 = 1008
Step 43: 1008 + 24 = 1032
Step 44: 1032 + 24 = 1056
Step 45: 1056 + 24 = 1080
Step 46: 1080 + 24 = 1104
Step 47: 1104 + 24 = 1128
Step 48: 1128 + 24 = 1152
Step 49: 1152 + 24 = 1176
Step 50: 1176 + 24 = 1200
Step 51: 1200 + 24 = 1224
Step 52: 1224 + 24 = 1248
Step 53: 1248 + 24 = 1272
Step 54: 1272 + 24 = 1296
Step 55: 1296 + 24 = 1320
Step 56: 1320 + 24 = 1344
Step 57: 1344 + 24 = 1368
Step 58: 1368 + 24 = 1392
Step 59: 1392 + 24 = 1416
Step 60: 1416 + 24 = 1440
Step 61: 1440 + 24 = 1464
Step 62: 1464 + 24 = 1488
Step 63: 1488 + 24 = 1512
Step 64: 1512 + 24 = 1536
Step 65: 1536 + 24 = 1560
Step 66: 1560 + 24 = 1584
Step 67: 1584 + 24 = 1608
Step 68: 1608 + 24 = 1632
Step 69: 1632 + 24 = 1656
Step 70: 1656 + 24 = 1680
Step 71: 1680 + 24 = 1704
Step 72: 1704 + 24 = 1728
Step 73: 1728 + 24 = 1752
Step 74: 1752 + 24 = 1776
Step 75: 1776 + 24 = 1800
Step 76: 1800 + 24 = 1824
Step 77: 1824 + 24 = 1848
Step 78: 1848 + 24 = 1872
Step 79: 1872 + 24 = 1896
Step 80: 1896 + 24 = 1920
Step 81: 1920 + 24 = 1944
Step 82: 1944 + 24 = 1968
Step 83: 1968 + 24 = 1992
Step 84: 1992 + 24 = 2016
Step 85: 2016 + 24 = 2040
Step 86: 2040 + 24 = 2064
Step 87: 2064 + 24 = 2088
Step 88: 2088 + 24 = 2112
Step 89: 2112 + 24 = 2136
Step 90: 2136 + 24 = 2160
Step 91: 2160 + 24 = 2184
Step 92: 2184 + 24 = 2208
Step 93: 2208 + 24 = 2232
Step 94: 2232 + 24 = 2256
Step 95: 2256 + 24 = 2280
Step 96: 2280 + 24 = 2304
Step 97: 2304 + 24 = 2328
Step 98: 2328 + 24 = 2352
Step 99: 2352 + 24 = 2376
Step 100: 2376 + 24 = 2400
Step 101: 2400 + 24 = 2424
Step 102: 2424 + 24 = 2448
Step 103: 2448 + 24 = 2472
Step 104: 2472 + 24 = 2496
Step 105: 2496 + 24 = 2520
Step 106: 2520 + 24 = 2544
Step 107: 2544 + 24 = 2568
Step 108: 2568 + 24 = 2592
Step 109: 2592 + 24 = 2616
Step 110: 2616 + 24 = 2640
Step 111: 2640 + 24 = 2664
Step 112: 2664 + 24 = 2688
Step 113: 2688 + 24 = 2712
Step 114: 2712 + 24 = 2736
Step 115: 2736 + 24 = 2760
Step 116: 2760 + 24 = 2784
Step 117: 2784 + 24 = 2808
Step 118: 2808 + 24 = 2832
Step 119: 2832 + 24 = 2856
Step 120: 2856 + 24 = 2880
Step 121: 2880 + 24 = 2904
Step 122: 2904 + 24 = 2928
Step 123: 2928 + 24 = 2952
Step 124: 2952 + 24 = 2976
Step 125: 2976 + 24 = 3000
Step 126: 3000 + 24 = 3024
Step 127: 3024 + 24 = 3048
Step 128: 3048 + 24 = 3072
Step 129: 3072 + 24 = 3096
Step 130: 3096 + 24 = 3120
Step 131: 3120 + 24 = 3144
Step 132: 3144 + 24 = 3168
Step 133: 3168 + 24 = 3192
Step 134: 3192 + 24 = 3216
Step 135: 3216 + 24 = 3240
Step 136: 3240 + 24 = 3264
Step 137: 3264 + 24 = 3288
Step 138: 3288 + 24 = 3312
Step 139: 3312 + 24 = 3336
Step 140: 3336 + 24 = 3360
Step 141: 3360 + 24 = 3384
Step 142: 3384 + 24 = 3408
Step 143: 3408 + 24 = 3432
Step 144: 3432 + 24 = 3456
Step 145: 3456 + 24 = 3480
Step 146: 3480 + 24 = 3504
Step 147: 3504 + 24 = 3528
Step 148: 3528 + 24 = 3552
Step 149: 3552 + 24 = 3576
Step 150: 3576 + 24 = 3600
Step 151: 3600 + 24 = 3624
Step 152: 3624 + 24 = 3648
Step 153: 3648 + 24 = 3672
Step 154: 3672 + 24 = 3696
Step 155: 3696 + 24 = 3720
Step 156: 3720 + 24 = 3744
Step 157: 3744 + 24 = 3768
Step 158: 3768 + 24 = 3792
Step 159: 3792 + 24 = 3816
Step 160: 3816 + 24 = 3840
Step 161: 3840 + 24 = 3864
Step 162: 3864 + 24 = 3888
Step 163: 3888 + 24 = 3912
Step 164: 3912 + 24 = 3936
Step 165: 3936 + 24 = 3960
Step 166: 3960 + 24 = 3984
Step 167: 3984 + 24 = 4008
Step 168: 4008 + 24 = 4032
Step 169: 4032 + 24 = 4056
Step 170: 4056 + 24 = 4080
Step 171: 4080 + 24 = 4104
Step 172: 4104 + 24 = 4128
Step 173: 4128 + 24 = 4152
Step 174: 4152 + 24 = 4176
Step 175: 4176 + 24 = 4200
Step 176: 4200 + 24 = 4224
Step 177: 4224 + 24 = 4248
Step 178: 4248 + 24 = 4272
Step 179: 4272 + 24 = 4296
Step 180: 4296 + 24 = 4320
Step 181: 4320 + 24 = 4344
Step 182: 4344 + 24 = 4368
Step 183: 4368 + 24 = 4392
Step 184: 4392 + 24 = 4416
Step 185: 4416 + 24 = 4440
Step 186: 4440 + 24 = 4464
Step 187: 4464 + 24 = 4488
Step 188: 4488 + 24 = 4512
Step 189: 4512 + 24 = 4536
Step 190: 4536 + 24 = 4560
Step 191: 4560 + 24 = 4584
Step 192: 4584 + 24 = 4608
Step 193: 4608 + 24 = 4632
Step 194: 4632 + 24 = 4656
Step 195: 4656 + 24 = 4680
Step 196: 4680 + 24 = 4704
Step 197: 4704 + 24 = 4728
Step 198: 4728 + 24 = 4752
Step 199: 4752 + 24 = 4776
Step 200: 4776 + 24 = 4800
Step 201: 4800 + 24 = 4824
Step 202: 4824 + 24 = 4848
Step 203: 4848 + 24 = 4872
Step 204: 4872 + 24 = 4896
Step 205: 4896 + 24 = 4920
Step 206: 4920 + 24 = 4944
Step 207: 4944 + 24 = 4968
Step 208: 4968 + 24 = 4992
Step 209: 4992 + 24 = 5016
Step 210: 5016 + 24 = 5040
Step 211: 5040 + 24 = 5064
Step 212: 5064 + 24 = 5088
Step 213: 5088 + 24 = 5112
Step 214: 5112 + 24 = 5136
Step 215: 5136 + 24 = 5160
Step 216: 5160 + 24 = 5184
Step 217: 5184 + 24 = 5208
Step 218: 5208 + 24 = 5232
Step 219: 5232 + 24 = 5256
Step 220: 5256 + 24 = 5280
Step 221: 5280 + 24 = 5304
Step 222: 5304 + 24 = 5328
Step 223: 5328 + 24 = 5352
Step 224: 5352 + 24 = 5376
Step 225: 5376 + 24 = 5400
Step 226: 5400 + 24 = 5424
Step 227: 5424 + 24 = 5448
Step 228: 5448 + 24 = 5472
Step 229: 5472 + 24 = 5496
Step 230: 5496 + 24 = 5520
Step 231: 5520 + 24 = 5544
Step 232: 5544 + 24 = 5568
Step 233: 5568 + 24 = 5592
Step 234: 5592 + 24 = 5616
Step 235: 5616 + 24 = 5640
Step 236: 5640 + 24 = 5664
Step 237: 5664 + 24 = 5688
Step 238: 5688 + 24 = 5712
Step 239: 5712 + 24 = 5736
Step 240: 5736 + 24 = 5760
Step 241: 5760 + 24 = 5784
Step 242: 5784 + 24 = 5808
Step 243: 5808 + 24 = 5832
Step 244: 5832 + 24 = 5856
Step 245: 5856 + 24 = 5880
Step 246: 5880 + 24 = 5904
Step 247: 5904 + 24 = 5928
Step 248: 5928 + 24 = 5952
Step 249: 5952 + 24 = 5976
Step 250: 5976 + 24 = 6000
Step 251: 6000 + 24 = 6024
Step 252: 6024 + 24 = 6048
Step 253: 6048 + 24 = 6072
Step 254: 6072 + 24 = 6096
Step 255: 6096 + 24 = 6120
Step 256: 6120 + 24 = 6144
Step 257: 6144 + 24 = 6168
Step 258: 6168 + 24 = 6192
Step 259: 6192 + 24 = 6216
Step 260: 6216 + 24 = 6240
Step 261: 6240 + 24 = 6264
Step 262: 6264 + 24 = 6288
Step 263: 6288 + 24 = 6312
Step 264: 6312 + 24 = 6336
Step 265: 6336 + 24 = 6360
Step 266: 6360 + 24 = 6384
Step 267: 6384 + 24 = 6408
Step 268: 6408 + 24 = 6432
Step 269: 6432 + 24 = 6456
Step 270: 6456 + 24 = 6480
Step 271: 6480 + 24 = 6504
Step 272: 6504 + 24 = 6528
Step 273: 6528 + 24 = 6552
Step 274: 6552 + 24 = 6576
Step 275: 6576 + 24 = 6600
Step 276: 6600 + 24 = 6624
Step 277: 6624 + 24 = 6648
Step 278: 6648 + 24 = 6672
Step 279: 6672 + 24 = 6696
Step 280: 6696 + 24 = 6720
Step 281: 6720 + 24 = 6744
Step 282: 6744 + 24 = 6768
Step 283: 6768 + 24 = 6792
Step 284: 6792 + 24 = 6816
Step 285: 6816 + 24 = 6840
Step 286: 6840 + 24 = 6864
Step 287: 6864 + 24 = 6888
Step 288: 6888 + 24 = 6912
Step 289: 6912 + 24 = 6936
Step 290: 6936 + 24 = 6960
Step 291: 6960 + 24 = 6984
Step 292: 6984 + 24 = 7008
Step 293: 7008 + 24 = 7032
Step 294: 7032 + 24 = 7056
Step 295: 7056 + 24 = 7080
Step 296: 7080 + 24 = 7104
Step 297: 7104 + 24 = 7128
Step 298: 7128 + 24 = 7152
Step 299: 7152 + 24 = 7176
Step 300: 7176 + 24 = 7200
Step 301: 7200 + 24 = 7224
Step 302: 7224 + 24 = 7248
Step 303: 7248 + 24 = 7272
Step 304: 7272 + 24 = 7296
Step 305: 7296 + 24 = 7320
Step 306: 7320 + 24 = 7344
Step 307: 7344 + 24 = 7368
Step 308: 7368 + 24 = 7392
Step 309: 7392 + 24 = 7416
Step 310: 7416 + 24 = 7440
Step 311: 7440 + 24 = 7464
Step 312: 7464 + 24 = 7488
Step 313: 7488 + 24 = 7512
Step 314: 7512 + 24 = 7536
Step 315: 7536 + 24 = 7560
Step 316: 7560 + 24 = 7584
Step 317: 7584 + 24 = 7608
Step 318: 7608 + 24 = 7632
Step 319: 7632 + 24 = 7656
Step 320: 7656 + 24 = 7680
Step 321: 7680 + 24 = 7704
Step 322: 7704 + 24 = 7728
Step 323: 7728 + 24 = 7752
Step 324: 7752 + 24 = 7776
Step 325: 7776 + 24 = 7800
Step 326: 7800 + 24 = 7824
Step 327: 7824 + 24 = 7848
Step 328: 7848 + 24 = 7872
Step 329: 7872 + 24 = 7896
Step 330: 7896 + 24 = 7920
Step 331: 7920 + 24 = 7944
Step 332: 7944 + 24 = 7968
Step 333: 7968 + 24 = 7992
Step 334: 7992 + 24 = 8016
Step 335: 8016 + 24 = 8040
Step 336: 8040 + 24 = 8064
Step 337: 8064 + 24 = 8088
Step 338: 8088 + 24 = 8112
Step 339: 8112 + 24 = 8136
Step 340: 8136 + 24 = 8160
Step 341: 8160 + 24 = 8184
Step 342: 8184 + 24 = 8208
Step 343: 8208 + 24 = 8232
Step 344: 8232 + 24 = 8256
Step 345: 8256 + 24 = 8280
Step 346: 8280 + 24 = 8304
Step 347: 8304 + 24 = 8328
Step 348: 8328 + 24 = 8352
Step 349: 8352 + 24 = 8376
Step 350: 8376 + 24 = 8400
Step 351: 8400 + 24 = 8424
Step 352: 8424 + 24 = 8448
Step 353: 8448 + 24 = 8472
Step 354: 8472 + 24 = 8496
Step 355: 8496 + 24 = 8520
Step 356: 8520 + 24 = 8544
Step 357: 8544 + 24 = 8568
Step 358: 8568 + 24 = 8592
Step 359: 8592 + 24 = 8616
Step 360: 8616 + 24 = 8640
Step 361: 8640 + 24 = 8664
Step 362: 8664 + 24 = 8688
Step 363: 8688 + 24 = 8712
Step 364: 8712 + 24 = 8736
Step 365: 8736 + 24 = 8760
Step 366: 8760 + 24 = 8784
Step 367: 8784 + 24 = 8808
Step 368: 8808 + 24 = 8832
Step 369: 8832 + 24 = 8856
Step 370: 8856 + 24 = 8880
Step 371: 8880 + 24 = 8904
Step 372: 8904 + 24 = 8928
Step 373: 8928 + 24 = 8952
Step 374: 8952 + 24 = 8976
Step 375: 8976 + 24 = 9000
Step 376: 9000 + 24 = 9024
Step 377: 9024 + 24 = 9048
Step 378: 9048 + 24 = 9072
Step 379: 9072 + 24 = 9096
Step 380: 9096 + 24 = 9120
Step 381: 9120 + 24 = 9144
Step 382: 9144 + 24 = 9168
Step 383: 9168 + 24 = 9192
Step 384: 9192 + 24 = 9216
Step 385: 9216 + 24 = 9240
Step 386: 9240 + 24 = 9264
Step 387: 9264 + 24 = 9288
Step 388: 9288 + 24 = 9312
Step 389: 9312 + 24 = 9336
Step 390: 9336 + 24 = 9360
Step 391: 9360 + 24 = 9384
Step 392: 9384 + 24 = 9408
Step 393: 9408 + 24 = 9432

So, 24*393 = 9432