Let's roll up our sleeves and solve this. We have 942 and we're going to multiply it by 422, essentially adding 942 to itself 422 times.
Step 1: 0 + 942 = 942
Step 2: 942 + 942 = 1884
Step 3: 1884 + 942 = 2826
Step 4: 2826 + 942 = 3768
Step 5: 3768 + 942 = 4710
Step 6: 4710 + 942 = 5652
Step 7: 5652 + 942 = 6594
Step 8: 6594 + 942 = 7536
Step 9: 7536 + 942 = 8478
Step 10: 8478 + 942 = 9420
Step 11: 9420 + 942 = 10362
Step 12: 10362 + 942 = 11304
Step 13: 11304 + 942 = 12246
Step 14: 12246 + 942 = 13188
Step 15: 13188 + 942 = 14130
Step 16: 14130 + 942 = 15072
Step 17: 15072 + 942 = 16014
Step 18: 16014 + 942 = 16956
Step 19: 16956 + 942 = 17898
Step 20: 17898 + 942 = 18840
Step 21: 18840 + 942 = 19782
Step 22: 19782 + 942 = 20724
Step 23: 20724 + 942 = 21666
Step 24: 21666 + 942 = 22608
Step 25: 22608 + 942 = 23550
Step 26: 23550 + 942 = 24492
Step 27: 24492 + 942 = 25434
Step 28: 25434 + 942 = 26376
Step 29: 26376 + 942 = 27318
Step 30: 27318 + 942 = 28260
Step 31: 28260 + 942 = 29202
Step 32: 29202 + 942 = 30144
Step 33: 30144 + 942 = 31086
Step 34: 31086 + 942 = 32028
Step 35: 32028 + 942 = 32970
Step 36: 32970 + 942 = 33912
Step 37: 33912 + 942 = 34854
Step 38: 34854 + 942 = 35796
Step 39: 35796 + 942 = 36738
Step 40: 36738 + 942 = 37680
Step 41: 37680 + 942 = 38622
Step 42: 38622 + 942 = 39564
Step 43: 39564 + 942 = 40506
Step 44: 40506 + 942 = 41448
Step 45: 41448 + 942 = 42390
Step 46: 42390 + 942 = 43332
Step 47: 43332 + 942 = 44274
Step 48: 44274 + 942 = 45216
Step 49: 45216 + 942 = 46158
Step 50: 46158 + 942 = 47100
Step 51: 47100 + 942 = 48042
Step 52: 48042 + 942 = 48984
Step 53: 48984 + 942 = 49926
Step 54: 49926 + 942 = 50868
Step 55: 50868 + 942 = 51810
Step 56: 51810 + 942 = 52752
Step 57: 52752 + 942 = 53694
Step 58: 53694 + 942 = 54636
Step 59: 54636 + 942 = 55578
Step 60: 55578 + 942 = 56520
Step 61: 56520 + 942 = 57462
Step 62: 57462 + 942 = 58404
Step 63: 58404 + 942 = 59346
Step 64: 59346 + 942 = 60288
Step 65: 60288 + 942 = 61230
Step 66: 61230 + 942 = 62172
Step 67: 62172 + 942 = 63114
Step 68: 63114 + 942 = 64056
Step 69: 64056 + 942 = 64998
Step 70: 64998 + 942 = 65940
Step 71: 65940 + 942 = 66882
Step 72: 66882 + 942 = 67824
Step 73: 67824 + 942 = 68766
Step 74: 68766 + 942 = 69708
Step 75: 69708 + 942 = 70650
Step 76: 70650 + 942 = 71592
Step 77: 71592 + 942 = 72534
Step 78: 72534 + 942 = 73476
Step 79: 73476 + 942 = 74418
Step 80: 74418 + 942 = 75360
Step 81: 75360 + 942 = 76302
Step 82: 76302 + 942 = 77244
Step 83: 77244 + 942 = 78186
Step 84: 78186 + 942 = 79128
Step 85: 79128 + 942 = 80070
Step 86: 80070 + 942 = 81012
Step 87: 81012 + 942 = 81954
Step 88: 81954 + 942 = 82896
Step 89: 82896 + 942 = 83838
Step 90: 83838 + 942 = 84780
Step 91: 84780 + 942 = 85722
Step 92: 85722 + 942 = 86664
Step 93: 86664 + 942 = 87606
Step 94: 87606 + 942 = 88548
Step 95: 88548 + 942 = 89490
Step 96: 89490 + 942 = 90432
Step 97: 90432 + 942 = 91374
Step 98: 91374 + 942 = 92316
Step 99: 92316 + 942 = 93258
Step 100: 93258 + 942 = 94200
Step 101: 94200 + 942 = 95142
Step 102: 95142 + 942 = 96084
Step 103: 96084 + 942 = 97026
Step 104: 97026 + 942 = 97968
Step 105: 97968 + 942 = 98910
Step 106: 98910 + 942 = 99852
Step 107: 99852 + 942 = 100794
Step 108: 100794 + 942 = 101736
Step 109: 101736 + 942 = 102678
Step 110: 102678 + 942 = 103620
Step 111: 103620 + 942 = 104562
Step 112: 104562 + 942 = 105504
Step 113: 105504 + 942 = 106446
Step 114: 106446 + 942 = 107388
Step 115: 107388 + 942 = 108330
Step 116: 108330 + 942 = 109272
Step 117: 109272 + 942 = 110214
Step 118: 110214 + 942 = 111156
Step 119: 111156 + 942 = 112098
Step 120: 112098 + 942 = 113040
Step 121: 113040 + 942 = 113982
Step 122: 113982 + 942 = 114924
Step 123: 114924 + 942 = 115866
Step 124: 115866 + 942 = 116808
Step 125: 116808 + 942 = 117750
Step 126: 117750 + 942 = 118692
Step 127: 118692 + 942 = 119634
Step 128: 119634 + 942 = 120576
Step 129: 120576 + 942 = 121518
Step 130: 121518 + 942 = 122460
Step 131: 122460 + 942 = 123402
Step 132: 123402 + 942 = 124344
Step 133: 124344 + 942 = 125286
Step 134: 125286 + 942 = 126228
Step 135: 126228 + 942 = 127170
Step 136: 127170 + 942 = 128112
Step 137: 128112 + 942 = 129054
Step 138: 129054 + 942 = 129996
Step 139: 129996 + 942 = 130938
Step 140: 130938 + 942 = 131880
Step 141: 131880 + 942 = 132822
Step 142: 132822 + 942 = 133764
Step 143: 133764 + 942 = 134706
Step 144: 134706 + 942 = 135648
Step 145: 135648 + 942 = 136590
Step 146: 136590 + 942 = 137532
Step 147: 137532 + 942 = 138474
Step 148: 138474 + 942 = 139416
Step 149: 139416 + 942 = 140358
Step 150: 140358 + 942 = 141300
Step 151: 141300 + 942 = 142242
Step 152: 142242 + 942 = 143184
Step 153: 143184 + 942 = 144126
Step 154: 144126 + 942 = 145068
Step 155: 145068 + 942 = 146010
Step 156: 146010 + 942 = 146952
Step 157: 146952 + 942 = 147894
Step 158: 147894 + 942 = 148836
Step 159: 148836 + 942 = 149778
Step 160: 149778 + 942 = 150720
Step 161: 150720 + 942 = 151662
Step 162: 151662 + 942 = 152604
Step 163: 152604 + 942 = 153546
Step 164: 153546 + 942 = 154488
Step 165: 154488 + 942 = 155430
Step 166: 155430 + 942 = 156372
Step 167: 156372 + 942 = 157314
Step 168: 157314 + 942 = 158256
Step 169: 158256 + 942 = 159198
Step 170: 159198 + 942 = 160140
Step 171: 160140 + 942 = 161082
Step 172: 161082 + 942 = 162024
Step 173: 162024 + 942 = 162966
Step 174: 162966 + 942 = 163908
Step 175: 163908 + 942 = 164850
Step 176: 164850 + 942 = 165792
Step 177: 165792 + 942 = 166734
Step 178: 166734 + 942 = 167676
Step 179: 167676 + 942 = 168618
Step 180: 168618 + 942 = 169560
Step 181: 169560 + 942 = 170502
Step 182: 170502 + 942 = 171444
Step 183: 171444 + 942 = 172386
Step 184: 172386 + 942 = 173328
Step 185: 173328 + 942 = 174270
Step 186: 174270 + 942 = 175212
Step 187: 175212 + 942 = 176154
Step 188: 176154 + 942 = 177096
Step 189: 177096 + 942 = 178038
Step 190: 178038 + 942 = 178980
Step 191: 178980 + 942 = 179922
Step 192: 179922 + 942 = 180864
Step 193: 180864 + 942 = 181806
Step 194: 181806 + 942 = 182748
Step 195: 182748 + 942 = 183690
Step 196: 183690 + 942 = 184632
Step 197: 184632 + 942 = 185574
Step 198: 185574 + 942 = 186516
Step 199: 186516 + 942 = 187458
Step 200: 187458 + 942 = 188400
Step 201: 188400 + 942 = 189342
Step 202: 189342 + 942 = 190284
Step 203: 190284 + 942 = 191226
Step 204: 191226 + 942 = 192168
Step 205: 192168 + 942 = 193110
Step 206: 193110 + 942 = 194052
Step 207: 194052 + 942 = 194994
Step 208: 194994 + 942 = 195936
Step 209: 195936 + 942 = 196878
Step 210: 196878 + 942 = 197820
Step 211: 197820 + 942 = 198762
Step 212: 198762 + 942 = 199704
Step 213: 199704 + 942 = 200646
Step 214: 200646 + 942 = 201588
Step 215: 201588 + 942 = 202530
Step 216: 202530 + 942 = 203472
Step 217: 203472 + 942 = 204414
Step 218: 204414 + 942 = 205356
Step 219: 205356 + 942 = 206298
Step 220: 206298 + 942 = 207240
Step 221: 207240 + 942 = 208182
Step 222: 208182 + 942 = 209124
Step 223: 209124 + 942 = 210066
Step 224: 210066 + 942 = 211008
Step 225: 211008 + 942 = 211950
Step 226: 211950 + 942 = 212892
Step 227: 212892 + 942 = 213834
Step 228: 213834 + 942 = 214776
Step 229: 214776 + 942 = 215718
Step 230: 215718 + 942 = 216660
Step 231: 216660 + 942 = 217602
Step 232: 217602 + 942 = 218544
Step 233: 218544 + 942 = 219486
Step 234: 219486 + 942 = 220428
Step 235: 220428 + 942 = 221370
Step 236: 221370 + 942 = 222312
Step 237: 222312 + 942 = 223254
Step 238: 223254 + 942 = 224196
Step 239: 224196 + 942 = 225138
Step 240: 225138 + 942 = 226080
Step 241: 226080 + 942 = 227022
Step 242: 227022 + 942 = 227964
Step 243: 227964 + 942 = 228906
Step 244: 228906 + 942 = 229848
Step 245: 229848 + 942 = 230790
Step 246: 230790 + 942 = 231732
Step 247: 231732 + 942 = 232674
Step 248: 232674 + 942 = 233616
Step 249: 233616 + 942 = 234558
Step 250: 234558 + 942 = 235500
Step 251: 235500 + 942 = 236442
Step 252: 236442 + 942 = 237384
Step 253: 237384 + 942 = 238326
Step 254: 238326 + 942 = 239268
Step 255: 239268 + 942 = 240210
Step 256: 240210 + 942 = 241152
Step 257: 241152 + 942 = 242094
Step 258: 242094 + 942 = 243036
Step 259: 243036 + 942 = 243978
Step 260: 243978 + 942 = 244920
Step 261: 244920 + 942 = 245862
Step 262: 245862 + 942 = 246804
Step 263: 246804 + 942 = 247746
Step 264: 247746 + 942 = 248688
Step 265: 248688 + 942 = 249630
Step 266: 249630 + 942 = 250572
Step 267: 250572 + 942 = 251514
Step 268: 251514 + 942 = 252456
Step 269: 252456 + 942 = 253398
Step 270: 253398 + 942 = 254340
Step 271: 254340 + 942 = 255282
Step 272: 255282 + 942 = 256224
Step 273: 256224 + 942 = 257166
Step 274: 257166 + 942 = 258108
Step 275: 258108 + 942 = 259050
Step 276: 259050 + 942 = 259992
Step 277: 259992 + 942 = 260934
Step 278: 260934 + 942 = 261876
Step 279: 261876 + 942 = 262818
Step 280: 262818 + 942 = 263760
Step 281: 263760 + 942 = 264702
Step 282: 264702 + 942 = 265644
Step 283: 265644 + 942 = 266586
Step 284: 266586 + 942 = 267528
Step 285: 267528 + 942 = 268470
Step 286: 268470 + 942 = 269412
Step 287: 269412 + 942 = 270354
Step 288: 270354 + 942 = 271296
Step 289: 271296 + 942 = 272238
Step 290: 272238 + 942 = 273180
Step 291: 273180 + 942 = 274122
Step 292: 274122 + 942 = 275064
Step 293: 275064 + 942 = 276006
Step 294: 276006 + 942 = 276948
Step 295: 276948 + 942 = 277890
Step 296: 277890 + 942 = 278832
Step 297: 278832 + 942 = 279774
Step 298: 279774 + 942 = 280716
Step 299: 280716 + 942 = 281658
Step 300: 281658 + 942 = 282600
Step 301: 282600 + 942 = 283542
Step 302: 283542 + 942 = 284484
Step 303: 284484 + 942 = 285426
Step 304: 285426 + 942 = 286368
Step 305: 286368 + 942 = 287310
Step 306: 287310 + 942 = 288252
Step 307: 288252 + 942 = 289194
Step 308: 289194 + 942 = 290136
Step 309: 290136 + 942 = 291078
Step 310: 291078 + 942 = 292020
Step 311: 292020 + 942 = 292962
Step 312: 292962 + 942 = 293904
Step 313: 293904 + 942 = 294846
Step 314: 294846 + 942 = 295788
Step 315: 295788 + 942 = 296730
Step 316: 296730 + 942 = 297672
Step 317: 297672 + 942 = 298614
Step 318: 298614 + 942 = 299556
Step 319: 299556 + 942 = 300498
Step 320: 300498 + 942 = 301440
Step 321: 301440 + 942 = 302382
Step 322: 302382 + 942 = 303324
Step 323: 303324 + 942 = 304266
Step 324: 304266 + 942 = 305208
Step 325: 305208 + 942 = 306150
Step 326: 306150 + 942 = 307092
Step 327: 307092 + 942 = 308034
Step 328: 308034 + 942 = 308976
Step 329: 308976 + 942 = 309918
Step 330: 309918 + 942 = 310860
Step 331: 310860 + 942 = 311802
Step 332: 311802 + 942 = 312744
Step 333: 312744 + 942 = 313686
Step 334: 313686 + 942 = 314628
Step 335: 314628 + 942 = 315570
Step 336: 315570 + 942 = 316512
Step 337: 316512 + 942 = 317454
Step 338: 317454 + 942 = 318396
Step 339: 318396 + 942 = 319338
Step 340: 319338 + 942 = 320280
Step 341: 320280 + 942 = 321222
Step 342: 321222 + 942 = 322164
Step 343: 322164 + 942 = 323106
Step 344: 323106 + 942 = 324048
Step 345: 324048 + 942 = 324990
Step 346: 324990 + 942 = 325932
Step 347: 325932 + 942 = 326874
Step 348: 326874 + 942 = 327816
Step 349: 327816 + 942 = 328758
Step 350: 328758 + 942 = 329700
Step 351: 329700 + 942 = 330642
Step 352: 330642 + 942 = 331584
Step 353: 331584 + 942 = 332526
Step 354: 332526 + 942 = 333468
Step 355: 333468 + 942 = 334410
Step 356: 334410 + 942 = 335352
Step 357: 335352 + 942 = 336294
Step 358: 336294 + 942 = 337236
Step 359: 337236 + 942 = 338178
Step 360: 338178 + 942 = 339120
Step 361: 339120 + 942 = 340062
Step 362: 340062 + 942 = 341004
Step 363: 341004 + 942 = 341946
Step 364: 341946 + 942 = 342888
Step 365: 342888 + 942 = 343830
Step 366: 343830 + 942 = 344772
Step 367: 344772 + 942 = 345714
Step 368: 345714 + 942 = 346656
Step 369: 346656 + 942 = 347598
Step 370: 347598 + 942 = 348540
Step 371: 348540 + 942 = 349482
Step 372: 349482 + 942 = 350424
Step 373: 350424 + 942 = 351366
Step 374: 351366 + 942 = 352308
Step 375: 352308 + 942 = 353250
Step 376: 353250 + 942 = 354192
Step 377: 354192 + 942 = 355134
Step 378: 355134 + 942 = 356076
Step 379: 356076 + 942 = 357018
Step 380: 357018 + 942 = 357960
Step 381: 357960 + 942 = 358902
Step 382: 358902 + 942 = 359844
Step 383: 359844 + 942 = 360786
Step 384: 360786 + 942 = 361728
Step 385: 361728 + 942 = 362670
Step 386: 362670 + 942 = 363612
Step 387: 363612 + 942 = 364554
Step 388: 364554 + 942 = 365496
Step 389: 365496 + 942 = 366438
Step 390: 366438 + 942 = 367380
Step 391: 367380 + 942 = 368322
Step 392: 368322 + 942 = 369264
Step 393: 369264 + 942 = 370206
Step 394: 370206 + 942 = 371148
Step 395: 371148 + 942 = 372090
Step 396: 372090 + 942 = 373032
Step 397: 373032 + 942 = 373974
Step 398: 373974 + 942 = 374916
Step 399: 374916 + 942 = 375858
Step 400: 375858 + 942 = 376800
Step 401: 376800 + 942 = 377742
Step 402: 377742 + 942 = 378684
Step 403: 378684 + 942 = 379626
Step 404: 379626 + 942 = 380568
Step 405: 380568 + 942 = 381510
Step 406: 381510 + 942 = 382452
Step 407: 382452 + 942 = 383394
Step 408: 383394 + 942 = 384336
Step 409: 384336 + 942 = 385278
Step 410: 385278 + 942 = 386220
Step 411: 386220 + 942 = 387162
Step 412: 387162 + 942 = 388104
Step 413: 388104 + 942 = 389046
Step 414: 389046 + 942 = 389988
Step 415: 389988 + 942 = 390930
Step 416: 390930 + 942 = 391872
Step 417: 391872 + 942 = 392814
Step 418: 392814 + 942 = 393756
Step 419: 393756 + 942 = 394698
Step 420: 394698 + 942 = 395640
Step 421: 395640 + 942 = 396582
Step 422: 396582 + 942 = 397524

So, 942*422 = 397524