Sure thing! We've got 807 and we're gonna multiply it by 158. That's the same as adding 807 to itself 158 times.
Step 1: 0 + 807 = 807
Step 2: 807 + 807 = 1614
Step 3: 1614 + 807 = 2421
Step 4: 2421 + 807 = 3228
Step 5: 3228 + 807 = 4035
Step 6: 4035 + 807 = 4842
Step 7: 4842 + 807 = 5649
Step 8: 5649 + 807 = 6456
Step 9: 6456 + 807 = 7263
Step 10: 7263 + 807 = 8070
Step 11: 8070 + 807 = 8877
Step 12: 8877 + 807 = 9684
Step 13: 9684 + 807 = 10491
Step 14: 10491 + 807 = 11298
Step 15: 11298 + 807 = 12105
Step 16: 12105 + 807 = 12912
Step 17: 12912 + 807 = 13719
Step 18: 13719 + 807 = 14526
Step 19: 14526 + 807 = 15333
Step 20: 15333 + 807 = 16140
Step 21: 16140 + 807 = 16947
Step 22: 16947 + 807 = 17754
Step 23: 17754 + 807 = 18561
Step 24: 18561 + 807 = 19368
Step 25: 19368 + 807 = 20175
Step 26: 20175 + 807 = 20982
Step 27: 20982 + 807 = 21789
Step 28: 21789 + 807 = 22596
Step 29: 22596 + 807 = 23403
Step 30: 23403 + 807 = 24210
Step 31: 24210 + 807 = 25017
Step 32: 25017 + 807 = 25824
Step 33: 25824 + 807 = 26631
Step 34: 26631 + 807 = 27438
Step 35: 27438 + 807 = 28245
Step 36: 28245 + 807 = 29052
Step 37: 29052 + 807 = 29859
Step 38: 29859 + 807 = 30666
Step 39: 30666 + 807 = 31473
Step 40: 31473 + 807 = 32280
Step 41: 32280 + 807 = 33087
Step 42: 33087 + 807 = 33894
Step 43: 33894 + 807 = 34701
Step 44: 34701 + 807 = 35508
Step 45: 35508 + 807 = 36315
Step 46: 36315 + 807 = 37122
Step 47: 37122 + 807 = 37929
Step 48: 37929 + 807 = 38736
Step 49: 38736 + 807 = 39543
Step 50: 39543 + 807 = 40350
Step 51: 40350 + 807 = 41157
Step 52: 41157 + 807 = 41964
Step 53: 41964 + 807 = 42771
Step 54: 42771 + 807 = 43578
Step 55: 43578 + 807 = 44385
Step 56: 44385 + 807 = 45192
Step 57: 45192 + 807 = 45999
Step 58: 45999 + 807 = 46806
Step 59: 46806 + 807 = 47613
Step 60: 47613 + 807 = 48420
Step 61: 48420 + 807 = 49227
Step 62: 49227 + 807 = 50034
Step 63: 50034 + 807 = 50841
Step 64: 50841 + 807 = 51648
Step 65: 51648 + 807 = 52455
Step 66: 52455 + 807 = 53262
Step 67: 53262 + 807 = 54069
Step 68: 54069 + 807 = 54876
Step 69: 54876 + 807 = 55683
Step 70: 55683 + 807 = 56490
Step 71: 56490 + 807 = 57297
Step 72: 57297 + 807 = 58104
Step 73: 58104 + 807 = 58911
Step 74: 58911 + 807 = 59718
Step 75: 59718 + 807 = 60525
Step 76: 60525 + 807 = 61332
Step 77: 61332 + 807 = 62139
Step 78: 62139 + 807 = 62946
Step 79: 62946 + 807 = 63753
Step 80: 63753 + 807 = 64560
Step 81: 64560 + 807 = 65367
Step 82: 65367 + 807 = 66174
Step 83: 66174 + 807 = 66981
Step 84: 66981 + 807 = 67788
Step 85: 67788 + 807 = 68595
Step 86: 68595 + 807 = 69402
Step 87: 69402 + 807 = 70209
Step 88: 70209 + 807 = 71016
Step 89: 71016 + 807 = 71823
Step 90: 71823 + 807 = 72630
Step 91: 72630 + 807 = 73437
Step 92: 73437 + 807 = 74244
Step 93: 74244 + 807 = 75051
Step 94: 75051 + 807 = 75858
Step 95: 75858 + 807 = 76665
Step 96: 76665 + 807 = 77472
Step 97: 77472 + 807 = 78279
Step 98: 78279 + 807 = 79086
Step 99: 79086 + 807 = 79893
Step 100: 79893 + 807 = 80700
Step 101: 80700 + 807 = 81507
Step 102: 81507 + 807 = 82314
Step 103: 82314 + 807 = 83121
Step 104: 83121 + 807 = 83928
Step 105: 83928 + 807 = 84735
Step 106: 84735 + 807 = 85542
Step 107: 85542 + 807 = 86349
Step 108: 86349 + 807 = 87156
Step 109: 87156 + 807 = 87963
Step 110: 87963 + 807 = 88770
Step 111: 88770 + 807 = 89577
Step 112: 89577 + 807 = 90384
Step 113: 90384 + 807 = 91191
Step 114: 91191 + 807 = 91998
Step 115: 91998 + 807 = 92805
Step 116: 92805 + 807 = 93612
Step 117: 93612 + 807 = 94419
Step 118: 94419 + 807 = 95226
Step 119: 95226 + 807 = 96033
Step 120: 96033 + 807 = 96840
Step 121: 96840 + 807 = 97647
Step 122: 97647 + 807 = 98454
Step 123: 98454 + 807 = 99261
Step 124: 99261 + 807 = 100068
Step 125: 100068 + 807 = 100875
Step 126: 100875 + 807 = 101682
Step 127: 101682 + 807 = 102489
Step 128: 102489 + 807 = 103296
Step 129: 103296 + 807 = 104103
Step 130: 104103 + 807 = 104910
Step 131: 104910 + 807 = 105717
Step 132: 105717 + 807 = 106524
Step 133: 106524 + 807 = 107331
Step 134: 107331 + 807 = 108138
Step 135: 108138 + 807 = 108945
Step 136: 108945 + 807 = 109752
Step 137: 109752 + 807 = 110559
Step 138: 110559 + 807 = 111366
Step 139: 111366 + 807 = 112173
Step 140: 112173 + 807 = 112980
Step 141: 112980 + 807 = 113787
Step 142: 113787 + 807 = 114594
Step 143: 114594 + 807 = 115401
Step 144: 115401 + 807 = 116208
Step 145: 116208 + 807 = 117015
Step 146: 117015 + 807 = 117822
Step 147: 117822 + 807 = 118629
Step 148: 118629 + 807 = 119436
Step 149: 119436 + 807 = 120243
Step 150: 120243 + 807 = 121050
Step 151: 121050 + 807 = 121857
Step 152: 121857 + 807 = 122664
Step 153: 122664 + 807 = 123471
Step 154: 123471 + 807 = 124278
Step 155: 124278 + 807 = 125085
Step 156: 125085 + 807 = 125892
Step 157: 125892 + 807 = 126699
Step 158: 126699 + 807 = 127506

So, 807*158 = 127506