Let's roll up our sleeves and solve this. We have 272 and we're going to multiply it by 423, essentially adding 272 to itself 423 times.
Step 1: 0 + 272 = 272
Step 2: 272 + 272 = 544
Step 3: 544 + 272 = 816
Step 4: 816 + 272 = 1088
Step 5: 1088 + 272 = 1360
Step 6: 1360 + 272 = 1632
Step 7: 1632 + 272 = 1904
Step 8: 1904 + 272 = 2176
Step 9: 2176 + 272 = 2448
Step 10: 2448 + 272 = 2720
Step 11: 2720 + 272 = 2992
Step 12: 2992 + 272 = 3264
Step 13: 3264 + 272 = 3536
Step 14: 3536 + 272 = 3808
Step 15: 3808 + 272 = 4080
Step 16: 4080 + 272 = 4352
Step 17: 4352 + 272 = 4624
Step 18: 4624 + 272 = 4896
Step 19: 4896 + 272 = 5168
Step 20: 5168 + 272 = 5440
Step 21: 5440 + 272 = 5712
Step 22: 5712 + 272 = 5984
Step 23: 5984 + 272 = 6256
Step 24: 6256 + 272 = 6528
Step 25: 6528 + 272 = 6800
Step 26: 6800 + 272 = 7072
Step 27: 7072 + 272 = 7344
Step 28: 7344 + 272 = 7616
Step 29: 7616 + 272 = 7888
Step 30: 7888 + 272 = 8160
Step 31: 8160 + 272 = 8432
Step 32: 8432 + 272 = 8704
Step 33: 8704 + 272 = 8976
Step 34: 8976 + 272 = 9248
Step 35: 9248 + 272 = 9520
Step 36: 9520 + 272 = 9792
Step 37: 9792 + 272 = 10064
Step 38: 10064 + 272 = 10336
Step 39: 10336 + 272 = 10608
Step 40: 10608 + 272 = 10880
Step 41: 10880 + 272 = 11152
Step 42: 11152 + 272 = 11424
Step 43: 11424 + 272 = 11696
Step 44: 11696 + 272 = 11968
Step 45: 11968 + 272 = 12240
Step 46: 12240 + 272 = 12512
Step 47: 12512 + 272 = 12784
Step 48: 12784 + 272 = 13056
Step 49: 13056 + 272 = 13328
Step 50: 13328 + 272 = 13600
Step 51: 13600 + 272 = 13872
Step 52: 13872 + 272 = 14144
Step 53: 14144 + 272 = 14416
Step 54: 14416 + 272 = 14688
Step 55: 14688 + 272 = 14960
Step 56: 14960 + 272 = 15232
Step 57: 15232 + 272 = 15504
Step 58: 15504 + 272 = 15776
Step 59: 15776 + 272 = 16048
Step 60: 16048 + 272 = 16320
Step 61: 16320 + 272 = 16592
Step 62: 16592 + 272 = 16864
Step 63: 16864 + 272 = 17136
Step 64: 17136 + 272 = 17408
Step 65: 17408 + 272 = 17680
Step 66: 17680 + 272 = 17952
Step 67: 17952 + 272 = 18224
Step 68: 18224 + 272 = 18496
Step 69: 18496 + 272 = 18768
Step 70: 18768 + 272 = 19040
Step 71: 19040 + 272 = 19312
Step 72: 19312 + 272 = 19584
Step 73: 19584 + 272 = 19856
Step 74: 19856 + 272 = 20128
Step 75: 20128 + 272 = 20400
Step 76: 20400 + 272 = 20672
Step 77: 20672 + 272 = 20944
Step 78: 20944 + 272 = 21216
Step 79: 21216 + 272 = 21488
Step 80: 21488 + 272 = 21760
Step 81: 21760 + 272 = 22032
Step 82: 22032 + 272 = 22304
Step 83: 22304 + 272 = 22576
Step 84: 22576 + 272 = 22848
Step 85: 22848 + 272 = 23120
Step 86: 23120 + 272 = 23392
Step 87: 23392 + 272 = 23664
Step 88: 23664 + 272 = 23936
Step 89: 23936 + 272 = 24208
Step 90: 24208 + 272 = 24480
Step 91: 24480 + 272 = 24752
Step 92: 24752 + 272 = 25024
Step 93: 25024 + 272 = 25296
Step 94: 25296 + 272 = 25568
Step 95: 25568 + 272 = 25840
Step 96: 25840 + 272 = 26112
Step 97: 26112 + 272 = 26384
Step 98: 26384 + 272 = 26656
Step 99: 26656 + 272 = 26928
Step 100: 26928 + 272 = 27200
Step 101: 27200 + 272 = 27472
Step 102: 27472 + 272 = 27744
Step 103: 27744 + 272 = 28016
Step 104: 28016 + 272 = 28288
Step 105: 28288 + 272 = 28560
Step 106: 28560 + 272 = 28832
Step 107: 28832 + 272 = 29104
Step 108: 29104 + 272 = 29376
Step 109: 29376 + 272 = 29648
Step 110: 29648 + 272 = 29920
Step 111: 29920 + 272 = 30192
Step 112: 30192 + 272 = 30464
Step 113: 30464 + 272 = 30736
Step 114: 30736 + 272 = 31008
Step 115: 31008 + 272 = 31280
Step 116: 31280 + 272 = 31552
Step 117: 31552 + 272 = 31824
Step 118: 31824 + 272 = 32096
Step 119: 32096 + 272 = 32368
Step 120: 32368 + 272 = 32640
Step 121: 32640 + 272 = 32912
Step 122: 32912 + 272 = 33184
Step 123: 33184 + 272 = 33456
Step 124: 33456 + 272 = 33728
Step 125: 33728 + 272 = 34000
Step 126: 34000 + 272 = 34272
Step 127: 34272 + 272 = 34544
Step 128: 34544 + 272 = 34816
Step 129: 34816 + 272 = 35088
Step 130: 35088 + 272 = 35360
Step 131: 35360 + 272 = 35632
Step 132: 35632 + 272 = 35904
Step 133: 35904 + 272 = 36176
Step 134: 36176 + 272 = 36448
Step 135: 36448 + 272 = 36720
Step 136: 36720 + 272 = 36992
Step 137: 36992 + 272 = 37264
Step 138: 37264 + 272 = 37536
Step 139: 37536 + 272 = 37808
Step 140: 37808 + 272 = 38080
Step 141: 38080 + 272 = 38352
Step 142: 38352 + 272 = 38624
Step 143: 38624 + 272 = 38896
Step 144: 38896 + 272 = 39168
Step 145: 39168 + 272 = 39440
Step 146: 39440 + 272 = 39712
Step 147: 39712 + 272 = 39984
Step 148: 39984 + 272 = 40256
Step 149: 40256 + 272 = 40528
Step 150: 40528 + 272 = 40800
Step 151: 40800 + 272 = 41072
Step 152: 41072 + 272 = 41344
Step 153: 41344 + 272 = 41616
Step 154: 41616 + 272 = 41888
Step 155: 41888 + 272 = 42160
Step 156: 42160 + 272 = 42432
Step 157: 42432 + 272 = 42704
Step 158: 42704 + 272 = 42976
Step 159: 42976 + 272 = 43248
Step 160: 43248 + 272 = 43520
Step 161: 43520 + 272 = 43792
Step 162: 43792 + 272 = 44064
Step 163: 44064 + 272 = 44336
Step 164: 44336 + 272 = 44608
Step 165: 44608 + 272 = 44880
Step 166: 44880 + 272 = 45152
Step 167: 45152 + 272 = 45424
Step 168: 45424 + 272 = 45696
Step 169: 45696 + 272 = 45968
Step 170: 45968 + 272 = 46240
Step 171: 46240 + 272 = 46512
Step 172: 46512 + 272 = 46784
Step 173: 46784 + 272 = 47056
Step 174: 47056 + 272 = 47328
Step 175: 47328 + 272 = 47600
Step 176: 47600 + 272 = 47872
Step 177: 47872 + 272 = 48144
Step 178: 48144 + 272 = 48416
Step 179: 48416 + 272 = 48688
Step 180: 48688 + 272 = 48960
Step 181: 48960 + 272 = 49232
Step 182: 49232 + 272 = 49504
Step 183: 49504 + 272 = 49776
Step 184: 49776 + 272 = 50048
Step 185: 50048 + 272 = 50320
Step 186: 50320 + 272 = 50592
Step 187: 50592 + 272 = 50864
Step 188: 50864 + 272 = 51136
Step 189: 51136 + 272 = 51408
Step 190: 51408 + 272 = 51680
Step 191: 51680 + 272 = 51952
Step 192: 51952 + 272 = 52224
Step 193: 52224 + 272 = 52496
Step 194: 52496 + 272 = 52768
Step 195: 52768 + 272 = 53040
Step 196: 53040 + 272 = 53312
Step 197: 53312 + 272 = 53584
Step 198: 53584 + 272 = 53856
Step 199: 53856 + 272 = 54128
Step 200: 54128 + 272 = 54400
Step 201: 54400 + 272 = 54672
Step 202: 54672 + 272 = 54944
Step 203: 54944 + 272 = 55216
Step 204: 55216 + 272 = 55488
Step 205: 55488 + 272 = 55760
Step 206: 55760 + 272 = 56032
Step 207: 56032 + 272 = 56304
Step 208: 56304 + 272 = 56576
Step 209: 56576 + 272 = 56848
Step 210: 56848 + 272 = 57120
Step 211: 57120 + 272 = 57392
Step 212: 57392 + 272 = 57664
Step 213: 57664 + 272 = 57936
Step 214: 57936 + 272 = 58208
Step 215: 58208 + 272 = 58480
Step 216: 58480 + 272 = 58752
Step 217: 58752 + 272 = 59024
Step 218: 59024 + 272 = 59296
Step 219: 59296 + 272 = 59568
Step 220: 59568 + 272 = 59840
Step 221: 59840 + 272 = 60112
Step 222: 60112 + 272 = 60384
Step 223: 60384 + 272 = 60656
Step 224: 60656 + 272 = 60928
Step 225: 60928 + 272 = 61200
Step 226: 61200 + 272 = 61472
Step 227: 61472 + 272 = 61744
Step 228: 61744 + 272 = 62016
Step 229: 62016 + 272 = 62288
Step 230: 62288 + 272 = 62560
Step 231: 62560 + 272 = 62832
Step 232: 62832 + 272 = 63104
Step 233: 63104 + 272 = 63376
Step 234: 63376 + 272 = 63648
Step 235: 63648 + 272 = 63920
Step 236: 63920 + 272 = 64192
Step 237: 64192 + 272 = 64464
Step 238: 64464 + 272 = 64736
Step 239: 64736 + 272 = 65008
Step 240: 65008 + 272 = 65280
Step 241: 65280 + 272 = 65552
Step 242: 65552 + 272 = 65824
Step 243: 65824 + 272 = 66096
Step 244: 66096 + 272 = 66368
Step 245: 66368 + 272 = 66640
Step 246: 66640 + 272 = 66912
Step 247: 66912 + 272 = 67184
Step 248: 67184 + 272 = 67456
Step 249: 67456 + 272 = 67728
Step 250: 67728 + 272 = 68000
Step 251: 68000 + 272 = 68272
Step 252: 68272 + 272 = 68544
Step 253: 68544 + 272 = 68816
Step 254: 68816 + 272 = 69088
Step 255: 69088 + 272 = 69360
Step 256: 69360 + 272 = 69632
Step 257: 69632 + 272 = 69904
Step 258: 69904 + 272 = 70176
Step 259: 70176 + 272 = 70448
Step 260: 70448 + 272 = 70720
Step 261: 70720 + 272 = 70992
Step 262: 70992 + 272 = 71264
Step 263: 71264 + 272 = 71536
Step 264: 71536 + 272 = 71808
Step 265: 71808 + 272 = 72080
Step 266: 72080 + 272 = 72352
Step 267: 72352 + 272 = 72624
Step 268: 72624 + 272 = 72896
Step 269: 72896 + 272 = 73168
Step 270: 73168 + 272 = 73440
Step 271: 73440 + 272 = 73712
Step 272: 73712 + 272 = 73984
Step 273: 73984 + 272 = 74256
Step 274: 74256 + 272 = 74528
Step 275: 74528 + 272 = 74800
Step 276: 74800 + 272 = 75072
Step 277: 75072 + 272 = 75344
Step 278: 75344 + 272 = 75616
Step 279: 75616 + 272 = 75888
Step 280: 75888 + 272 = 76160
Step 281: 76160 + 272 = 76432
Step 282: 76432 + 272 = 76704
Step 283: 76704 + 272 = 76976
Step 284: 76976 + 272 = 77248
Step 285: 77248 + 272 = 77520
Step 286: 77520 + 272 = 77792
Step 287: 77792 + 272 = 78064
Step 288: 78064 + 272 = 78336
Step 289: 78336 + 272 = 78608
Step 290: 78608 + 272 = 78880
Step 291: 78880 + 272 = 79152
Step 292: 79152 + 272 = 79424
Step 293: 79424 + 272 = 79696
Step 294: 79696 + 272 = 79968
Step 295: 79968 + 272 = 80240
Step 296: 80240 + 272 = 80512
Step 297: 80512 + 272 = 80784
Step 298: 80784 + 272 = 81056
Step 299: 81056 + 272 = 81328
Step 300: 81328 + 272 = 81600
Step 301: 81600 + 272 = 81872
Step 302: 81872 + 272 = 82144
Step 303: 82144 + 272 = 82416
Step 304: 82416 + 272 = 82688
Step 305: 82688 + 272 = 82960
Step 306: 82960 + 272 = 83232
Step 307: 83232 + 272 = 83504
Step 308: 83504 + 272 = 83776
Step 309: 83776 + 272 = 84048
Step 310: 84048 + 272 = 84320
Step 311: 84320 + 272 = 84592
Step 312: 84592 + 272 = 84864
Step 313: 84864 + 272 = 85136
Step 314: 85136 + 272 = 85408
Step 315: 85408 + 272 = 85680
Step 316: 85680 + 272 = 85952
Step 317: 85952 + 272 = 86224
Step 318: 86224 + 272 = 86496
Step 319: 86496 + 272 = 86768
Step 320: 86768 + 272 = 87040
Step 321: 87040 + 272 = 87312
Step 322: 87312 + 272 = 87584
Step 323: 87584 + 272 = 87856
Step 324: 87856 + 272 = 88128
Step 325: 88128 + 272 = 88400
Step 326: 88400 + 272 = 88672
Step 327: 88672 + 272 = 88944
Step 328: 88944 + 272 = 89216
Step 329: 89216 + 272 = 89488
Step 330: 89488 + 272 = 89760
Step 331: 89760 + 272 = 90032
Step 332: 90032 + 272 = 90304
Step 333: 90304 + 272 = 90576
Step 334: 90576 + 272 = 90848
Step 335: 90848 + 272 = 91120
Step 336: 91120 + 272 = 91392
Step 337: 91392 + 272 = 91664
Step 338: 91664 + 272 = 91936
Step 339: 91936 + 272 = 92208
Step 340: 92208 + 272 = 92480
Step 341: 92480 + 272 = 92752
Step 342: 92752 + 272 = 93024
Step 343: 93024 + 272 = 93296
Step 344: 93296 + 272 = 93568
Step 345: 93568 + 272 = 93840
Step 346: 93840 + 272 = 94112
Step 347: 94112 + 272 = 94384
Step 348: 94384 + 272 = 94656
Step 349: 94656 + 272 = 94928
Step 350: 94928 + 272 = 95200
Step 351: 95200 + 272 = 95472
Step 352: 95472 + 272 = 95744
Step 353: 95744 + 272 = 96016
Step 354: 96016 + 272 = 96288
Step 355: 96288 + 272 = 96560
Step 356: 96560 + 272 = 96832
Step 357: 96832 + 272 = 97104
Step 358: 97104 + 272 = 97376
Step 359: 97376 + 272 = 97648
Step 360: 97648 + 272 = 97920
Step 361: 97920 + 272 = 98192
Step 362: 98192 + 272 = 98464
Step 363: 98464 + 272 = 98736
Step 364: 98736 + 272 = 99008
Step 365: 99008 + 272 = 99280
Step 366: 99280 + 272 = 99552
Step 367: 99552 + 272 = 99824
Step 368: 99824 + 272 = 100096
Step 369: 100096 + 272 = 100368
Step 370: 100368 + 272 = 100640
Step 371: 100640 + 272 = 100912
Step 372: 100912 + 272 = 101184
Step 373: 101184 + 272 = 101456
Step 374: 101456 + 272 = 101728
Step 375: 101728 + 272 = 102000
Step 376: 102000 + 272 = 102272
Step 377: 102272 + 272 = 102544
Step 378: 102544 + 272 = 102816
Step 379: 102816 + 272 = 103088
Step 380: 103088 + 272 = 103360
Step 381: 103360 + 272 = 103632
Step 382: 103632 + 272 = 103904
Step 383: 103904 + 272 = 104176
Step 384: 104176 + 272 = 104448
Step 385: 104448 + 272 = 104720
Step 386: 104720 + 272 = 104992
Step 387: 104992 + 272 = 105264
Step 388: 105264 + 272 = 105536
Step 389: 105536 + 272 = 105808
Step 390: 105808 + 272 = 106080
Step 391: 106080 + 272 = 106352
Step 392: 106352 + 272 = 106624
Step 393: 106624 + 272 = 106896
Step 394: 106896 + 272 = 107168
Step 395: 107168 + 272 = 107440
Step 396: 107440 + 272 = 107712
Step 397: 107712 + 272 = 107984
Step 398: 107984 + 272 = 108256
Step 399: 108256 + 272 = 108528
Step 400: 108528 + 272 = 108800
Step 401: 108800 + 272 = 109072
Step 402: 109072 + 272 = 109344
Step 403: 109344 + 272 = 109616
Step 404: 109616 + 272 = 109888
Step 405: 109888 + 272 = 110160
Step 406: 110160 + 272 = 110432
Step 407: 110432 + 272 = 110704
Step 408: 110704 + 272 = 110976
Step 409: 110976 + 272 = 111248
Step 410: 111248 + 272 = 111520
Step 411: 111520 + 272 = 111792
Step 412: 111792 + 272 = 112064
Step 413: 112064 + 272 = 112336
Step 414: 112336 + 272 = 112608
Step 415: 112608 + 272 = 112880
Step 416: 112880 + 272 = 113152
Step 417: 113152 + 272 = 113424
Step 418: 113424 + 272 = 113696
Step 419: 113696 + 272 = 113968
Step 420: 113968 + 272 = 114240
Step 421: 114240 + 272 = 114512
Step 422: 114512 + 272 = 114784
Step 423: 114784 + 272 = 115056

So, 272*423 = 115056