Sure thing, let's get straight to it. We start with 245 and we're going to multiply it by 158, which means adding 245 to itself 158 times.
Step 1: 0 + 245 = 245
Step 2: 245 + 245 = 490
Step 3: 490 + 245 = 735
Step 4: 735 + 245 = 980
Step 5: 980 + 245 = 1225
Step 6: 1225 + 245 = 1470
Step 7: 1470 + 245 = 1715
Step 8: 1715 + 245 = 1960
Step 9: 1960 + 245 = 2205
Step 10: 2205 + 245 = 2450
Step 11: 2450 + 245 = 2695
Step 12: 2695 + 245 = 2940
Step 13: 2940 + 245 = 3185
Step 14: 3185 + 245 = 3430
Step 15: 3430 + 245 = 3675
Step 16: 3675 + 245 = 3920
Step 17: 3920 + 245 = 4165
Step 18: 4165 + 245 = 4410
Step 19: 4410 + 245 = 4655
Step 20: 4655 + 245 = 4900
Step 21: 4900 + 245 = 5145
Step 22: 5145 + 245 = 5390
Step 23: 5390 + 245 = 5635
Step 24: 5635 + 245 = 5880
Step 25: 5880 + 245 = 6125
Step 26: 6125 + 245 = 6370
Step 27: 6370 + 245 = 6615
Step 28: 6615 + 245 = 6860
Step 29: 6860 + 245 = 7105
Step 30: 7105 + 245 = 7350
Step 31: 7350 + 245 = 7595
Step 32: 7595 + 245 = 7840
Step 33: 7840 + 245 = 8085
Step 34: 8085 + 245 = 8330
Step 35: 8330 + 245 = 8575
Step 36: 8575 + 245 = 8820
Step 37: 8820 + 245 = 9065
Step 38: 9065 + 245 = 9310
Step 39: 9310 + 245 = 9555
Step 40: 9555 + 245 = 9800
Step 41: 9800 + 245 = 10045
Step 42: 10045 + 245 = 10290
Step 43: 10290 + 245 = 10535
Step 44: 10535 + 245 = 10780
Step 45: 10780 + 245 = 11025
Step 46: 11025 + 245 = 11270
Step 47: 11270 + 245 = 11515
Step 48: 11515 + 245 = 11760
Step 49: 11760 + 245 = 12005
Step 50: 12005 + 245 = 12250
Step 51: 12250 + 245 = 12495
Step 52: 12495 + 245 = 12740
Step 53: 12740 + 245 = 12985
Step 54: 12985 + 245 = 13230
Step 55: 13230 + 245 = 13475
Step 56: 13475 + 245 = 13720
Step 57: 13720 + 245 = 13965
Step 58: 13965 + 245 = 14210
Step 59: 14210 + 245 = 14455
Step 60: 14455 + 245 = 14700
Step 61: 14700 + 245 = 14945
Step 62: 14945 + 245 = 15190
Step 63: 15190 + 245 = 15435
Step 64: 15435 + 245 = 15680
Step 65: 15680 + 245 = 15925
Step 66: 15925 + 245 = 16170
Step 67: 16170 + 245 = 16415
Step 68: 16415 + 245 = 16660
Step 69: 16660 + 245 = 16905
Step 70: 16905 + 245 = 17150
Step 71: 17150 + 245 = 17395
Step 72: 17395 + 245 = 17640
Step 73: 17640 + 245 = 17885
Step 74: 17885 + 245 = 18130
Step 75: 18130 + 245 = 18375
Step 76: 18375 + 245 = 18620
Step 77: 18620 + 245 = 18865
Step 78: 18865 + 245 = 19110
Step 79: 19110 + 245 = 19355
Step 80: 19355 + 245 = 19600
Step 81: 19600 + 245 = 19845
Step 82: 19845 + 245 = 20090
Step 83: 20090 + 245 = 20335
Step 84: 20335 + 245 = 20580
Step 85: 20580 + 245 = 20825
Step 86: 20825 + 245 = 21070
Step 87: 21070 + 245 = 21315
Step 88: 21315 + 245 = 21560
Step 89: 21560 + 245 = 21805
Step 90: 21805 + 245 = 22050
Step 91: 22050 + 245 = 22295
Step 92: 22295 + 245 = 22540
Step 93: 22540 + 245 = 22785
Step 94: 22785 + 245 = 23030
Step 95: 23030 + 245 = 23275
Step 96: 23275 + 245 = 23520
Step 97: 23520 + 245 = 23765
Step 98: 23765 + 245 = 24010
Step 99: 24010 + 245 = 24255
Step 100: 24255 + 245 = 24500
Step 101: 24500 + 245 = 24745
Step 102: 24745 + 245 = 24990
Step 103: 24990 + 245 = 25235
Step 104: 25235 + 245 = 25480
Step 105: 25480 + 245 = 25725
Step 106: 25725 + 245 = 25970
Step 107: 25970 + 245 = 26215
Step 108: 26215 + 245 = 26460
Step 109: 26460 + 245 = 26705
Step 110: 26705 + 245 = 26950
Step 111: 26950 + 245 = 27195
Step 112: 27195 + 245 = 27440
Step 113: 27440 + 245 = 27685
Step 114: 27685 + 245 = 27930
Step 115: 27930 + 245 = 28175
Step 116: 28175 + 245 = 28420
Step 117: 28420 + 245 = 28665
Step 118: 28665 + 245 = 28910
Step 119: 28910 + 245 = 29155
Step 120: 29155 + 245 = 29400
Step 121: 29400 + 245 = 29645
Step 122: 29645 + 245 = 29890
Step 123: 29890 + 245 = 30135
Step 124: 30135 + 245 = 30380
Step 125: 30380 + 245 = 30625
Step 126: 30625 + 245 = 30870
Step 127: 30870 + 245 = 31115
Step 128: 31115 + 245 = 31360
Step 129: 31360 + 245 = 31605
Step 130: 31605 + 245 = 31850
Step 131: 31850 + 245 = 32095
Step 132: 32095 + 245 = 32340
Step 133: 32340 + 245 = 32585
Step 134: 32585 + 245 = 32830
Step 135: 32830 + 245 = 33075
Step 136: 33075 + 245 = 33320
Step 137: 33320 + 245 = 33565
Step 138: 33565 + 245 = 33810
Step 139: 33810 + 245 = 34055
Step 140: 34055 + 245 = 34300
Step 141: 34300 + 245 = 34545
Step 142: 34545 + 245 = 34790
Step 143: 34790 + 245 = 35035
Step 144: 35035 + 245 = 35280
Step 145: 35280 + 245 = 35525
Step 146: 35525 + 245 = 35770
Step 147: 35770 + 245 = 36015
Step 148: 36015 + 245 = 36260
Step 149: 36260 + 245 = 36505
Step 150: 36505 + 245 = 36750
Step 151: 36750 + 245 = 36995
Step 152: 36995 + 245 = 37240
Step 153: 37240 + 245 = 37485
Step 154: 37485 + 245 = 37730
Step 155: 37730 + 245 = 37975
Step 156: 37975 + 245 = 38220
Step 157: 38220 + 245 = 38465
Step 158: 38465 + 245 = 38710

So, 245*158 = 38710