Let's get this math done. We have 650 and we're going to multiply it by 160. This is the same as taking 650 and adding it to itself 160 times.
Step 1: 0 + 650 = 650
Step 2: 650 + 650 = 1300
Step 3: 1300 + 650 = 1950
Step 4: 1950 + 650 = 2600
Step 5: 2600 + 650 = 3250
Step 6: 3250 + 650 = 3900
Step 7: 3900 + 650 = 4550
Step 8: 4550 + 650 = 5200
Step 9: 5200 + 650 = 5850
Step 10: 5850 + 650 = 6500
Step 11: 6500 + 650 = 7150
Step 12: 7150 + 650 = 7800
Step 13: 7800 + 650 = 8450
Step 14: 8450 + 650 = 9100
Step 15: 9100 + 650 = 9750
Step 16: 9750 + 650 = 10400
Step 17: 10400 + 650 = 11050
Step 18: 11050 + 650 = 11700
Step 19: 11700 + 650 = 12350
Step 20: 12350 + 650 = 13000
Step 21: 13000 + 650 = 13650
Step 22: 13650 + 650 = 14300
Step 23: 14300 + 650 = 14950
Step 24: 14950 + 650 = 15600
Step 25: 15600 + 650 = 16250
Step 26: 16250 + 650 = 16900
Step 27: 16900 + 650 = 17550
Step 28: 17550 + 650 = 18200
Step 29: 18200 + 650 = 18850
Step 30: 18850 + 650 = 19500
Step 31: 19500 + 650 = 20150
Step 32: 20150 + 650 = 20800
Step 33: 20800 + 650 = 21450
Step 34: 21450 + 650 = 22100
Step 35: 22100 + 650 = 22750
Step 36: 22750 + 650 = 23400
Step 37: 23400 + 650 = 24050
Step 38: 24050 + 650 = 24700
Step 39: 24700 + 650 = 25350
Step 40: 25350 + 650 = 26000
Step 41: 26000 + 650 = 26650
Step 42: 26650 + 650 = 27300
Step 43: 27300 + 650 = 27950
Step 44: 27950 + 650 = 28600
Step 45: 28600 + 650 = 29250
Step 46: 29250 + 650 = 29900
Step 47: 29900 + 650 = 30550
Step 48: 30550 + 650 = 31200
Step 49: 31200 + 650 = 31850
Step 50: 31850 + 650 = 32500
Step 51: 32500 + 650 = 33150
Step 52: 33150 + 650 = 33800
Step 53: 33800 + 650 = 34450
Step 54: 34450 + 650 = 35100
Step 55: 35100 + 650 = 35750
Step 56: 35750 + 650 = 36400
Step 57: 36400 + 650 = 37050
Step 58: 37050 + 650 = 37700
Step 59: 37700 + 650 = 38350
Step 60: 38350 + 650 = 39000
Step 61: 39000 + 650 = 39650
Step 62: 39650 + 650 = 40300
Step 63: 40300 + 650 = 40950
Step 64: 40950 + 650 = 41600
Step 65: 41600 + 650 = 42250
Step 66: 42250 + 650 = 42900
Step 67: 42900 + 650 = 43550
Step 68: 43550 + 650 = 44200
Step 69: 44200 + 650 = 44850
Step 70: 44850 + 650 = 45500
Step 71: 45500 + 650 = 46150
Step 72: 46150 + 650 = 46800
Step 73: 46800 + 650 = 47450
Step 74: 47450 + 650 = 48100
Step 75: 48100 + 650 = 48750
Step 76: 48750 + 650 = 49400
Step 77: 49400 + 650 = 50050
Step 78: 50050 + 650 = 50700
Step 79: 50700 + 650 = 51350
Step 80: 51350 + 650 = 52000
Step 81: 52000 + 650 = 52650
Step 82: 52650 + 650 = 53300
Step 83: 53300 + 650 = 53950
Step 84: 53950 + 650 = 54600
Step 85: 54600 + 650 = 55250
Step 86: 55250 + 650 = 55900
Step 87: 55900 + 650 = 56550
Step 88: 56550 + 650 = 57200
Step 89: 57200 + 650 = 57850
Step 90: 57850 + 650 = 58500
Step 91: 58500 + 650 = 59150
Step 92: 59150 + 650 = 59800
Step 93: 59800 + 650 = 60450
Step 94: 60450 + 650 = 61100
Step 95: 61100 + 650 = 61750
Step 96: 61750 + 650 = 62400
Step 97: 62400 + 650 = 63050
Step 98: 63050 + 650 = 63700
Step 99: 63700 + 650 = 64350
Step 100: 64350 + 650 = 65000
Step 101: 65000 + 650 = 65650
Step 102: 65650 + 650 = 66300
Step 103: 66300 + 650 = 66950
Step 104: 66950 + 650 = 67600
Step 105: 67600 + 650 = 68250
Step 106: 68250 + 650 = 68900
Step 107: 68900 + 650 = 69550
Step 108: 69550 + 650 = 70200
Step 109: 70200 + 650 = 70850
Step 110: 70850 + 650 = 71500
Step 111: 71500 + 650 = 72150
Step 112: 72150 + 650 = 72800
Step 113: 72800 + 650 = 73450
Step 114: 73450 + 650 = 74100
Step 115: 74100 + 650 = 74750
Step 116: 74750 + 650 = 75400
Step 117: 75400 + 650 = 76050
Step 118: 76050 + 650 = 76700
Step 119: 76700 + 650 = 77350
Step 120: 77350 + 650 = 78000
Step 121: 78000 + 650 = 78650
Step 122: 78650 + 650 = 79300
Step 123: 79300 + 650 = 79950
Step 124: 79950 + 650 = 80600
Step 125: 80600 + 650 = 81250
Step 126: 81250 + 650 = 81900
Step 127: 81900 + 650 = 82550
Step 128: 82550 + 650 = 83200
Step 129: 83200 + 650 = 83850
Step 130: 83850 + 650 = 84500
Step 131: 84500 + 650 = 85150
Step 132: 85150 + 650 = 85800
Step 133: 85800 + 650 = 86450
Step 134: 86450 + 650 = 87100
Step 135: 87100 + 650 = 87750
Step 136: 87750 + 650 = 88400
Step 137: 88400 + 650 = 89050
Step 138: 89050 + 650 = 89700
Step 139: 89700 + 650 = 90350
Step 140: 90350 + 650 = 91000
Step 141: 91000 + 650 = 91650
Step 142: 91650 + 650 = 92300
Step 143: 92300 + 650 = 92950
Step 144: 92950 + 650 = 93600
Step 145: 93600 + 650 = 94250
Step 146: 94250 + 650 = 94900
Step 147: 94900 + 650 = 95550
Step 148: 95550 + 650 = 96200
Step 149: 96200 + 650 = 96850
Step 150: 96850 + 650 = 97500
Step 151: 97500 + 650 = 98150
Step 152: 98150 + 650 = 98800
Step 153: 98800 + 650 = 99450
Step 154: 99450 + 650 = 100100
Step 155: 100100 + 650 = 100750
Step 156: 100750 + 650 = 101400
Step 157: 101400 + 650 = 102050
Step 158: 102050 + 650 = 102700
Step 159: 102700 + 650 = 103350
Step 160: 103350 + 650 = 104000

So, 650*160 = 104000