OK, let's crack this. We're given 311 and our task is to multiply it by 252. Essentially, we'll be adding 311 to itself 252 times.
Step 1: 0 + 311 = 311
Step 2: 311 + 311 = 622
Step 3: 622 + 311 = 933
Step 4: 933 + 311 = 1244
Step 5: 1244 + 311 = 1555
Step 6: 1555 + 311 = 1866
Step 7: 1866 + 311 = 2177
Step 8: 2177 + 311 = 2488
Step 9: 2488 + 311 = 2799
Step 10: 2799 + 311 = 3110
Step 11: 3110 + 311 = 3421
Step 12: 3421 + 311 = 3732
Step 13: 3732 + 311 = 4043
Step 14: 4043 + 311 = 4354
Step 15: 4354 + 311 = 4665
Step 16: 4665 + 311 = 4976
Step 17: 4976 + 311 = 5287
Step 18: 5287 + 311 = 5598
Step 19: 5598 + 311 = 5909
Step 20: 5909 + 311 = 6220
Step 21: 6220 + 311 = 6531
Step 22: 6531 + 311 = 6842
Step 23: 6842 + 311 = 7153
Step 24: 7153 + 311 = 7464
Step 25: 7464 + 311 = 7775
Step 26: 7775 + 311 = 8086
Step 27: 8086 + 311 = 8397
Step 28: 8397 + 311 = 8708
Step 29: 8708 + 311 = 9019
Step 30: 9019 + 311 = 9330
Step 31: 9330 + 311 = 9641
Step 32: 9641 + 311 = 9952
Step 33: 9952 + 311 = 10263
Step 34: 10263 + 311 = 10574
Step 35: 10574 + 311 = 10885
Step 36: 10885 + 311 = 11196
Step 37: 11196 + 311 = 11507
Step 38: 11507 + 311 = 11818
Step 39: 11818 + 311 = 12129
Step 40: 12129 + 311 = 12440
Step 41: 12440 + 311 = 12751
Step 42: 12751 + 311 = 13062
Step 43: 13062 + 311 = 13373
Step 44: 13373 + 311 = 13684
Step 45: 13684 + 311 = 13995
Step 46: 13995 + 311 = 14306
Step 47: 14306 + 311 = 14617
Step 48: 14617 + 311 = 14928
Step 49: 14928 + 311 = 15239
Step 50: 15239 + 311 = 15550
Step 51: 15550 + 311 = 15861
Step 52: 15861 + 311 = 16172
Step 53: 16172 + 311 = 16483
Step 54: 16483 + 311 = 16794
Step 55: 16794 + 311 = 17105
Step 56: 17105 + 311 = 17416
Step 57: 17416 + 311 = 17727
Step 58: 17727 + 311 = 18038
Step 59: 18038 + 311 = 18349
Step 60: 18349 + 311 = 18660
Step 61: 18660 + 311 = 18971
Step 62: 18971 + 311 = 19282
Step 63: 19282 + 311 = 19593
Step 64: 19593 + 311 = 19904
Step 65: 19904 + 311 = 20215
Step 66: 20215 + 311 = 20526
Step 67: 20526 + 311 = 20837
Step 68: 20837 + 311 = 21148
Step 69: 21148 + 311 = 21459
Step 70: 21459 + 311 = 21770
Step 71: 21770 + 311 = 22081
Step 72: 22081 + 311 = 22392
Step 73: 22392 + 311 = 22703
Step 74: 22703 + 311 = 23014
Step 75: 23014 + 311 = 23325
Step 76: 23325 + 311 = 23636
Step 77: 23636 + 311 = 23947
Step 78: 23947 + 311 = 24258
Step 79: 24258 + 311 = 24569
Step 80: 24569 + 311 = 24880
Step 81: 24880 + 311 = 25191
Step 82: 25191 + 311 = 25502
Step 83: 25502 + 311 = 25813
Step 84: 25813 + 311 = 26124
Step 85: 26124 + 311 = 26435
Step 86: 26435 + 311 = 26746
Step 87: 26746 + 311 = 27057
Step 88: 27057 + 311 = 27368
Step 89: 27368 + 311 = 27679
Step 90: 27679 + 311 = 27990
Step 91: 27990 + 311 = 28301
Step 92: 28301 + 311 = 28612
Step 93: 28612 + 311 = 28923
Step 94: 28923 + 311 = 29234
Step 95: 29234 + 311 = 29545
Step 96: 29545 + 311 = 29856
Step 97: 29856 + 311 = 30167
Step 98: 30167 + 311 = 30478
Step 99: 30478 + 311 = 30789
Step 100: 30789 + 311 = 31100
Step 101: 31100 + 311 = 31411
Step 102: 31411 + 311 = 31722
Step 103: 31722 + 311 = 32033
Step 104: 32033 + 311 = 32344
Step 105: 32344 + 311 = 32655
Step 106: 32655 + 311 = 32966
Step 107: 32966 + 311 = 33277
Step 108: 33277 + 311 = 33588
Step 109: 33588 + 311 = 33899
Step 110: 33899 + 311 = 34210
Step 111: 34210 + 311 = 34521
Step 112: 34521 + 311 = 34832
Step 113: 34832 + 311 = 35143
Step 114: 35143 + 311 = 35454
Step 115: 35454 + 311 = 35765
Step 116: 35765 + 311 = 36076
Step 117: 36076 + 311 = 36387
Step 118: 36387 + 311 = 36698
Step 119: 36698 + 311 = 37009
Step 120: 37009 + 311 = 37320
Step 121: 37320 + 311 = 37631
Step 122: 37631 + 311 = 37942
Step 123: 37942 + 311 = 38253
Step 124: 38253 + 311 = 38564
Step 125: 38564 + 311 = 38875
Step 126: 38875 + 311 = 39186
Step 127: 39186 + 311 = 39497
Step 128: 39497 + 311 = 39808
Step 129: 39808 + 311 = 40119
Step 130: 40119 + 311 = 40430
Step 131: 40430 + 311 = 40741
Step 132: 40741 + 311 = 41052
Step 133: 41052 + 311 = 41363
Step 134: 41363 + 311 = 41674
Step 135: 41674 + 311 = 41985
Step 136: 41985 + 311 = 42296
Step 137: 42296 + 311 = 42607
Step 138: 42607 + 311 = 42918
Step 139: 42918 + 311 = 43229
Step 140: 43229 + 311 = 43540
Step 141: 43540 + 311 = 43851
Step 142: 43851 + 311 = 44162
Step 143: 44162 + 311 = 44473
Step 144: 44473 + 311 = 44784
Step 145: 44784 + 311 = 45095
Step 146: 45095 + 311 = 45406
Step 147: 45406 + 311 = 45717
Step 148: 45717 + 311 = 46028
Step 149: 46028 + 311 = 46339
Step 150: 46339 + 311 = 46650
Step 151: 46650 + 311 = 46961
Step 152: 46961 + 311 = 47272
Step 153: 47272 + 311 = 47583
Step 154: 47583 + 311 = 47894
Step 155: 47894 + 311 = 48205
Step 156: 48205 + 311 = 48516
Step 157: 48516 + 311 = 48827
Step 158: 48827 + 311 = 49138
Step 159: 49138 + 311 = 49449
Step 160: 49449 + 311 = 49760
Step 161: 49760 + 311 = 50071
Step 162: 50071 + 311 = 50382
Step 163: 50382 + 311 = 50693
Step 164: 50693 + 311 = 51004
Step 165: 51004 + 311 = 51315
Step 166: 51315 + 311 = 51626
Step 167: 51626 + 311 = 51937
Step 168: 51937 + 311 = 52248
Step 169: 52248 + 311 = 52559
Step 170: 52559 + 311 = 52870
Step 171: 52870 + 311 = 53181
Step 172: 53181 + 311 = 53492
Step 173: 53492 + 311 = 53803
Step 174: 53803 + 311 = 54114
Step 175: 54114 + 311 = 54425
Step 176: 54425 + 311 = 54736
Step 177: 54736 + 311 = 55047
Step 178: 55047 + 311 = 55358
Step 179: 55358 + 311 = 55669
Step 180: 55669 + 311 = 55980
Step 181: 55980 + 311 = 56291
Step 182: 56291 + 311 = 56602
Step 183: 56602 + 311 = 56913
Step 184: 56913 + 311 = 57224
Step 185: 57224 + 311 = 57535
Step 186: 57535 + 311 = 57846
Step 187: 57846 + 311 = 58157
Step 188: 58157 + 311 = 58468
Step 189: 58468 + 311 = 58779
Step 190: 58779 + 311 = 59090
Step 191: 59090 + 311 = 59401
Step 192: 59401 + 311 = 59712
Step 193: 59712 + 311 = 60023
Step 194: 60023 + 311 = 60334
Step 195: 60334 + 311 = 60645
Step 196: 60645 + 311 = 60956
Step 197: 60956 + 311 = 61267
Step 198: 61267 + 311 = 61578
Step 199: 61578 + 311 = 61889
Step 200: 61889 + 311 = 62200
Step 201: 62200 + 311 = 62511
Step 202: 62511 + 311 = 62822
Step 203: 62822 + 311 = 63133
Step 204: 63133 + 311 = 63444
Step 205: 63444 + 311 = 63755
Step 206: 63755 + 311 = 64066
Step 207: 64066 + 311 = 64377
Step 208: 64377 + 311 = 64688
Step 209: 64688 + 311 = 64999
Step 210: 64999 + 311 = 65310
Step 211: 65310 + 311 = 65621
Step 212: 65621 + 311 = 65932
Step 213: 65932 + 311 = 66243
Step 214: 66243 + 311 = 66554
Step 215: 66554 + 311 = 66865
Step 216: 66865 + 311 = 67176
Step 217: 67176 + 311 = 67487
Step 218: 67487 + 311 = 67798
Step 219: 67798 + 311 = 68109
Step 220: 68109 + 311 = 68420
Step 221: 68420 + 311 = 68731
Step 222: 68731 + 311 = 69042
Step 223: 69042 + 311 = 69353
Step 224: 69353 + 311 = 69664
Step 225: 69664 + 311 = 69975
Step 226: 69975 + 311 = 70286
Step 227: 70286 + 311 = 70597
Step 228: 70597 + 311 = 70908
Step 229: 70908 + 311 = 71219
Step 230: 71219 + 311 = 71530
Step 231: 71530 + 311 = 71841
Step 232: 71841 + 311 = 72152
Step 233: 72152 + 311 = 72463
Step 234: 72463 + 311 = 72774
Step 235: 72774 + 311 = 73085
Step 236: 73085 + 311 = 73396
Step 237: 73396 + 311 = 73707
Step 238: 73707 + 311 = 74018
Step 239: 74018 + 311 = 74329
Step 240: 74329 + 311 = 74640
Step 241: 74640 + 311 = 74951
Step 242: 74951 + 311 = 75262
Step 243: 75262 + 311 = 75573
Step 244: 75573 + 311 = 75884
Step 245: 75884 + 311 = 76195
Step 246: 76195 + 311 = 76506
Step 247: 76506 + 311 = 76817
Step 248: 76817 + 311 = 77128
Step 249: 77128 + 311 = 77439
Step 250: 77439 + 311 = 77750
Step 251: 77750 + 311 = 78061
Step 252: 78061 + 311 = 78372

So, 311*252 = 78372