OK, let's work through this together. We're starting with 622 and we're going to multiply it by 310, which means we add 622 to itself 310 times.
Step 1: 0 + 622 = 622
Step 2: 622 + 622 = 1244
Step 3: 1244 + 622 = 1866
Step 4: 1866 + 622 = 2488
Step 5: 2488 + 622 = 3110
Step 6: 3110 + 622 = 3732
Step 7: 3732 + 622 = 4354
Step 8: 4354 + 622 = 4976
Step 9: 4976 + 622 = 5598
Step 10: 5598 + 622 = 6220
Step 11: 6220 + 622 = 6842
Step 12: 6842 + 622 = 7464
Step 13: 7464 + 622 = 8086
Step 14: 8086 + 622 = 8708
Step 15: 8708 + 622 = 9330
Step 16: 9330 + 622 = 9952
Step 17: 9952 + 622 = 10574
Step 18: 10574 + 622 = 11196
Step 19: 11196 + 622 = 11818
Step 20: 11818 + 622 = 12440
Step 21: 12440 + 622 = 13062
Step 22: 13062 + 622 = 13684
Step 23: 13684 + 622 = 14306
Step 24: 14306 + 622 = 14928
Step 25: 14928 + 622 = 15550
Step 26: 15550 + 622 = 16172
Step 27: 16172 + 622 = 16794
Step 28: 16794 + 622 = 17416
Step 29: 17416 + 622 = 18038
Step 30: 18038 + 622 = 18660
Step 31: 18660 + 622 = 19282
Step 32: 19282 + 622 = 19904
Step 33: 19904 + 622 = 20526
Step 34: 20526 + 622 = 21148
Step 35: 21148 + 622 = 21770
Step 36: 21770 + 622 = 22392
Step 37: 22392 + 622 = 23014
Step 38: 23014 + 622 = 23636
Step 39: 23636 + 622 = 24258
Step 40: 24258 + 622 = 24880
Step 41: 24880 + 622 = 25502
Step 42: 25502 + 622 = 26124
Step 43: 26124 + 622 = 26746
Step 44: 26746 + 622 = 27368
Step 45: 27368 + 622 = 27990
Step 46: 27990 + 622 = 28612
Step 47: 28612 + 622 = 29234
Step 48: 29234 + 622 = 29856
Step 49: 29856 + 622 = 30478
Step 50: 30478 + 622 = 31100
Step 51: 31100 + 622 = 31722
Step 52: 31722 + 622 = 32344
Step 53: 32344 + 622 = 32966
Step 54: 32966 + 622 = 33588
Step 55: 33588 + 622 = 34210
Step 56: 34210 + 622 = 34832
Step 57: 34832 + 622 = 35454
Step 58: 35454 + 622 = 36076
Step 59: 36076 + 622 = 36698
Step 60: 36698 + 622 = 37320
Step 61: 37320 + 622 = 37942
Step 62: 37942 + 622 = 38564
Step 63: 38564 + 622 = 39186
Step 64: 39186 + 622 = 39808
Step 65: 39808 + 622 = 40430
Step 66: 40430 + 622 = 41052
Step 67: 41052 + 622 = 41674
Step 68: 41674 + 622 = 42296
Step 69: 42296 + 622 = 42918
Step 70: 42918 + 622 = 43540
Step 71: 43540 + 622 = 44162
Step 72: 44162 + 622 = 44784
Step 73: 44784 + 622 = 45406
Step 74: 45406 + 622 = 46028
Step 75: 46028 + 622 = 46650
Step 76: 46650 + 622 = 47272
Step 77: 47272 + 622 = 47894
Step 78: 47894 + 622 = 48516
Step 79: 48516 + 622 = 49138
Step 80: 49138 + 622 = 49760
Step 81: 49760 + 622 = 50382
Step 82: 50382 + 622 = 51004
Step 83: 51004 + 622 = 51626
Step 84: 51626 + 622 = 52248
Step 85: 52248 + 622 = 52870
Step 86: 52870 + 622 = 53492
Step 87: 53492 + 622 = 54114
Step 88: 54114 + 622 = 54736
Step 89: 54736 + 622 = 55358
Step 90: 55358 + 622 = 55980
Step 91: 55980 + 622 = 56602
Step 92: 56602 + 622 = 57224
Step 93: 57224 + 622 = 57846
Step 94: 57846 + 622 = 58468
Step 95: 58468 + 622 = 59090
Step 96: 59090 + 622 = 59712
Step 97: 59712 + 622 = 60334
Step 98: 60334 + 622 = 60956
Step 99: 60956 + 622 = 61578
Step 100: 61578 + 622 = 62200
Step 101: 62200 + 622 = 62822
Step 102: 62822 + 622 = 63444
Step 103: 63444 + 622 = 64066
Step 104: 64066 + 622 = 64688
Step 105: 64688 + 622 = 65310
Step 106: 65310 + 622 = 65932
Step 107: 65932 + 622 = 66554
Step 108: 66554 + 622 = 67176
Step 109: 67176 + 622 = 67798
Step 110: 67798 + 622 = 68420
Step 111: 68420 + 622 = 69042
Step 112: 69042 + 622 = 69664
Step 113: 69664 + 622 = 70286
Step 114: 70286 + 622 = 70908
Step 115: 70908 + 622 = 71530
Step 116: 71530 + 622 = 72152
Step 117: 72152 + 622 = 72774
Step 118: 72774 + 622 = 73396
Step 119: 73396 + 622 = 74018
Step 120: 74018 + 622 = 74640
Step 121: 74640 + 622 = 75262
Step 122: 75262 + 622 = 75884
Step 123: 75884 + 622 = 76506
Step 124: 76506 + 622 = 77128
Step 125: 77128 + 622 = 77750
Step 126: 77750 + 622 = 78372
Step 127: 78372 + 622 = 78994
Step 128: 78994 + 622 = 79616
Step 129: 79616 + 622 = 80238
Step 130: 80238 + 622 = 80860
Step 131: 80860 + 622 = 81482
Step 132: 81482 + 622 = 82104
Step 133: 82104 + 622 = 82726
Step 134: 82726 + 622 = 83348
Step 135: 83348 + 622 = 83970
Step 136: 83970 + 622 = 84592
Step 137: 84592 + 622 = 85214
Step 138: 85214 + 622 = 85836
Step 139: 85836 + 622 = 86458
Step 140: 86458 + 622 = 87080
Step 141: 87080 + 622 = 87702
Step 142: 87702 + 622 = 88324
Step 143: 88324 + 622 = 88946
Step 144: 88946 + 622 = 89568
Step 145: 89568 + 622 = 90190
Step 146: 90190 + 622 = 90812
Step 147: 90812 + 622 = 91434
Step 148: 91434 + 622 = 92056
Step 149: 92056 + 622 = 92678
Step 150: 92678 + 622 = 93300
Step 151: 93300 + 622 = 93922
Step 152: 93922 + 622 = 94544
Step 153: 94544 + 622 = 95166
Step 154: 95166 + 622 = 95788
Step 155: 95788 + 622 = 96410
Step 156: 96410 + 622 = 97032
Step 157: 97032 + 622 = 97654
Step 158: 97654 + 622 = 98276
Step 159: 98276 + 622 = 98898
Step 160: 98898 + 622 = 99520
Step 161: 99520 + 622 = 100142
Step 162: 100142 + 622 = 100764
Step 163: 100764 + 622 = 101386
Step 164: 101386 + 622 = 102008
Step 165: 102008 + 622 = 102630
Step 166: 102630 + 622 = 103252
Step 167: 103252 + 622 = 103874
Step 168: 103874 + 622 = 104496
Step 169: 104496 + 622 = 105118
Step 170: 105118 + 622 = 105740
Step 171: 105740 + 622 = 106362
Step 172: 106362 + 622 = 106984
Step 173: 106984 + 622 = 107606
Step 174: 107606 + 622 = 108228
Step 175: 108228 + 622 = 108850
Step 176: 108850 + 622 = 109472
Step 177: 109472 + 622 = 110094
Step 178: 110094 + 622 = 110716
Step 179: 110716 + 622 = 111338
Step 180: 111338 + 622 = 111960
Step 181: 111960 + 622 = 112582
Step 182: 112582 + 622 = 113204
Step 183: 113204 + 622 = 113826
Step 184: 113826 + 622 = 114448
Step 185: 114448 + 622 = 115070
Step 186: 115070 + 622 = 115692
Step 187: 115692 + 622 = 116314
Step 188: 116314 + 622 = 116936
Step 189: 116936 + 622 = 117558
Step 190: 117558 + 622 = 118180
Step 191: 118180 + 622 = 118802
Step 192: 118802 + 622 = 119424
Step 193: 119424 + 622 = 120046
Step 194: 120046 + 622 = 120668
Step 195: 120668 + 622 = 121290
Step 196: 121290 + 622 = 121912
Step 197: 121912 + 622 = 122534
Step 198: 122534 + 622 = 123156
Step 199: 123156 + 622 = 123778
Step 200: 123778 + 622 = 124400
Step 201: 124400 + 622 = 125022
Step 202: 125022 + 622 = 125644
Step 203: 125644 + 622 = 126266
Step 204: 126266 + 622 = 126888
Step 205: 126888 + 622 = 127510
Step 206: 127510 + 622 = 128132
Step 207: 128132 + 622 = 128754
Step 208: 128754 + 622 = 129376
Step 209: 129376 + 622 = 129998
Step 210: 129998 + 622 = 130620
Step 211: 130620 + 622 = 131242
Step 212: 131242 + 622 = 131864
Step 213: 131864 + 622 = 132486
Step 214: 132486 + 622 = 133108
Step 215: 133108 + 622 = 133730
Step 216: 133730 + 622 = 134352
Step 217: 134352 + 622 = 134974
Step 218: 134974 + 622 = 135596
Step 219: 135596 + 622 = 136218
Step 220: 136218 + 622 = 136840
Step 221: 136840 + 622 = 137462
Step 222: 137462 + 622 = 138084
Step 223: 138084 + 622 = 138706
Step 224: 138706 + 622 = 139328
Step 225: 139328 + 622 = 139950
Step 226: 139950 + 622 = 140572
Step 227: 140572 + 622 = 141194
Step 228: 141194 + 622 = 141816
Step 229: 141816 + 622 = 142438
Step 230: 142438 + 622 = 143060
Step 231: 143060 + 622 = 143682
Step 232: 143682 + 622 = 144304
Step 233: 144304 + 622 = 144926
Step 234: 144926 + 622 = 145548
Step 235: 145548 + 622 = 146170
Step 236: 146170 + 622 = 146792
Step 237: 146792 + 622 = 147414
Step 238: 147414 + 622 = 148036
Step 239: 148036 + 622 = 148658
Step 240: 148658 + 622 = 149280
Step 241: 149280 + 622 = 149902
Step 242: 149902 + 622 = 150524
Step 243: 150524 + 622 = 151146
Step 244: 151146 + 622 = 151768
Step 245: 151768 + 622 = 152390
Step 246: 152390 + 622 = 153012
Step 247: 153012 + 622 = 153634
Step 248: 153634 + 622 = 154256
Step 249: 154256 + 622 = 154878
Step 250: 154878 + 622 = 155500
Step 251: 155500 + 622 = 156122
Step 252: 156122 + 622 = 156744
Step 253: 156744 + 622 = 157366
Step 254: 157366 + 622 = 157988
Step 255: 157988 + 622 = 158610
Step 256: 158610 + 622 = 159232
Step 257: 159232 + 622 = 159854
Step 258: 159854 + 622 = 160476
Step 259: 160476 + 622 = 161098
Step 260: 161098 + 622 = 161720
Step 261: 161720 + 622 = 162342
Step 262: 162342 + 622 = 162964
Step 263: 162964 + 622 = 163586
Step 264: 163586 + 622 = 164208
Step 265: 164208 + 622 = 164830
Step 266: 164830 + 622 = 165452
Step 267: 165452 + 622 = 166074
Step 268: 166074 + 622 = 166696
Step 269: 166696 + 622 = 167318
Step 270: 167318 + 622 = 167940
Step 271: 167940 + 622 = 168562
Step 272: 168562 + 622 = 169184
Step 273: 169184 + 622 = 169806
Step 274: 169806 + 622 = 170428
Step 275: 170428 + 622 = 171050
Step 276: 171050 + 622 = 171672
Step 277: 171672 + 622 = 172294
Step 278: 172294 + 622 = 172916
Step 279: 172916 + 622 = 173538
Step 280: 173538 + 622 = 174160
Step 281: 174160 + 622 = 174782
Step 282: 174782 + 622 = 175404
Step 283: 175404 + 622 = 176026
Step 284: 176026 + 622 = 176648
Step 285: 176648 + 622 = 177270
Step 286: 177270 + 622 = 177892
Step 287: 177892 + 622 = 178514
Step 288: 178514 + 622 = 179136
Step 289: 179136 + 622 = 179758
Step 290: 179758 + 622 = 180380
Step 291: 180380 + 622 = 181002
Step 292: 181002 + 622 = 181624
Step 293: 181624 + 622 = 182246
Step 294: 182246 + 622 = 182868
Step 295: 182868 + 622 = 183490
Step 296: 183490 + 622 = 184112
Step 297: 184112 + 622 = 184734
Step 298: 184734 + 622 = 185356
Step 299: 185356 + 622 = 185978
Step 300: 185978 + 622 = 186600
Step 301: 186600 + 622 = 187222
Step 302: 187222 + 622 = 187844
Step 303: 187844 + 622 = 188466
Step 304: 188466 + 622 = 189088
Step 305: 189088 + 622 = 189710
Step 306: 189710 + 622 = 190332
Step 307: 190332 + 622 = 190954
Step 308: 190954 + 622 = 191576
Step 309: 191576 + 622 = 192198
Step 310: 192198 + 622 = 192820

So, 622*310 = 192820