OK, let's crack this. We're given 607 and our task is to multiply it by 158. Essentially, we'll be adding 607 to itself 158 times.
Step 1: 0 + 607 = 607
Step 2: 607 + 607 = 1214
Step 3: 1214 + 607 = 1821
Step 4: 1821 + 607 = 2428
Step 5: 2428 + 607 = 3035
Step 6: 3035 + 607 = 3642
Step 7: 3642 + 607 = 4249
Step 8: 4249 + 607 = 4856
Step 9: 4856 + 607 = 5463
Step 10: 5463 + 607 = 6070
Step 11: 6070 + 607 = 6677
Step 12: 6677 + 607 = 7284
Step 13: 7284 + 607 = 7891
Step 14: 7891 + 607 = 8498
Step 15: 8498 + 607 = 9105
Step 16: 9105 + 607 = 9712
Step 17: 9712 + 607 = 10319
Step 18: 10319 + 607 = 10926
Step 19: 10926 + 607 = 11533
Step 20: 11533 + 607 = 12140
Step 21: 12140 + 607 = 12747
Step 22: 12747 + 607 = 13354
Step 23: 13354 + 607 = 13961
Step 24: 13961 + 607 = 14568
Step 25: 14568 + 607 = 15175
Step 26: 15175 + 607 = 15782
Step 27: 15782 + 607 = 16389
Step 28: 16389 + 607 = 16996
Step 29: 16996 + 607 = 17603
Step 30: 17603 + 607 = 18210
Step 31: 18210 + 607 = 18817
Step 32: 18817 + 607 = 19424
Step 33: 19424 + 607 = 20031
Step 34: 20031 + 607 = 20638
Step 35: 20638 + 607 = 21245
Step 36: 21245 + 607 = 21852
Step 37: 21852 + 607 = 22459
Step 38: 22459 + 607 = 23066
Step 39: 23066 + 607 = 23673
Step 40: 23673 + 607 = 24280
Step 41: 24280 + 607 = 24887
Step 42: 24887 + 607 = 25494
Step 43: 25494 + 607 = 26101
Step 44: 26101 + 607 = 26708
Step 45: 26708 + 607 = 27315
Step 46: 27315 + 607 = 27922
Step 47: 27922 + 607 = 28529
Step 48: 28529 + 607 = 29136
Step 49: 29136 + 607 = 29743
Step 50: 29743 + 607 = 30350
Step 51: 30350 + 607 = 30957
Step 52: 30957 + 607 = 31564
Step 53: 31564 + 607 = 32171
Step 54: 32171 + 607 = 32778
Step 55: 32778 + 607 = 33385
Step 56: 33385 + 607 = 33992
Step 57: 33992 + 607 = 34599
Step 58: 34599 + 607 = 35206
Step 59: 35206 + 607 = 35813
Step 60: 35813 + 607 = 36420
Step 61: 36420 + 607 = 37027
Step 62: 37027 + 607 = 37634
Step 63: 37634 + 607 = 38241
Step 64: 38241 + 607 = 38848
Step 65: 38848 + 607 = 39455
Step 66: 39455 + 607 = 40062
Step 67: 40062 + 607 = 40669
Step 68: 40669 + 607 = 41276
Step 69: 41276 + 607 = 41883
Step 70: 41883 + 607 = 42490
Step 71: 42490 + 607 = 43097
Step 72: 43097 + 607 = 43704
Step 73: 43704 + 607 = 44311
Step 74: 44311 + 607 = 44918
Step 75: 44918 + 607 = 45525
Step 76: 45525 + 607 = 46132
Step 77: 46132 + 607 = 46739
Step 78: 46739 + 607 = 47346
Step 79: 47346 + 607 = 47953
Step 80: 47953 + 607 = 48560
Step 81: 48560 + 607 = 49167
Step 82: 49167 + 607 = 49774
Step 83: 49774 + 607 = 50381
Step 84: 50381 + 607 = 50988
Step 85: 50988 + 607 = 51595
Step 86: 51595 + 607 = 52202
Step 87: 52202 + 607 = 52809
Step 88: 52809 + 607 = 53416
Step 89: 53416 + 607 = 54023
Step 90: 54023 + 607 = 54630
Step 91: 54630 + 607 = 55237
Step 92: 55237 + 607 = 55844
Step 93: 55844 + 607 = 56451
Step 94: 56451 + 607 = 57058
Step 95: 57058 + 607 = 57665
Step 96: 57665 + 607 = 58272
Step 97: 58272 + 607 = 58879
Step 98: 58879 + 607 = 59486
Step 99: 59486 + 607 = 60093
Step 100: 60093 + 607 = 60700
Step 101: 60700 + 607 = 61307
Step 102: 61307 + 607 = 61914
Step 103: 61914 + 607 = 62521
Step 104: 62521 + 607 = 63128
Step 105: 63128 + 607 = 63735
Step 106: 63735 + 607 = 64342
Step 107: 64342 + 607 = 64949
Step 108: 64949 + 607 = 65556
Step 109: 65556 + 607 = 66163
Step 110: 66163 + 607 = 66770
Step 111: 66770 + 607 = 67377
Step 112: 67377 + 607 = 67984
Step 113: 67984 + 607 = 68591
Step 114: 68591 + 607 = 69198
Step 115: 69198 + 607 = 69805
Step 116: 69805 + 607 = 70412
Step 117: 70412 + 607 = 71019
Step 118: 71019 + 607 = 71626
Step 119: 71626 + 607 = 72233
Step 120: 72233 + 607 = 72840
Step 121: 72840 + 607 = 73447
Step 122: 73447 + 607 = 74054
Step 123: 74054 + 607 = 74661
Step 124: 74661 + 607 = 75268
Step 125: 75268 + 607 = 75875
Step 126: 75875 + 607 = 76482
Step 127: 76482 + 607 = 77089
Step 128: 77089 + 607 = 77696
Step 129: 77696 + 607 = 78303
Step 130: 78303 + 607 = 78910
Step 131: 78910 + 607 = 79517
Step 132: 79517 + 607 = 80124
Step 133: 80124 + 607 = 80731
Step 134: 80731 + 607 = 81338
Step 135: 81338 + 607 = 81945
Step 136: 81945 + 607 = 82552
Step 137: 82552 + 607 = 83159
Step 138: 83159 + 607 = 83766
Step 139: 83766 + 607 = 84373
Step 140: 84373 + 607 = 84980
Step 141: 84980 + 607 = 85587
Step 142: 85587 + 607 = 86194
Step 143: 86194 + 607 = 86801
Step 144: 86801 + 607 = 87408
Step 145: 87408 + 607 = 88015
Step 146: 88015 + 607 = 88622
Step 147: 88622 + 607 = 89229
Step 148: 89229 + 607 = 89836
Step 149: 89836 + 607 = 90443
Step 150: 90443 + 607 = 91050
Step 151: 91050 + 607 = 91657
Step 152: 91657 + 607 = 92264
Step 153: 92264 + 607 = 92871
Step 154: 92871 + 607 = 93478
Step 155: 93478 + 607 = 94085
Step 156: 94085 + 607 = 94692
Step 157: 94692 + 607 = 95299
Step 158: 95299 + 607 = 95906

So, 607*158 = 95906