OK, let's work through this together. We're starting with 460 and we're going to multiply it by 90, which means we add 460 to itself 90 times.
Step 1: 0 + 460 = 460
Step 2: 460 + 460 = 920
Step 3: 920 + 460 = 1380
Step 4: 1380 + 460 = 1840
Step 5: 1840 + 460 = 2300
Step 6: 2300 + 460 = 2760
Step 7: 2760 + 460 = 3220
Step 8: 3220 + 460 = 3680
Step 9: 3680 + 460 = 4140
Step 10: 4140 + 460 = 4600
Step 11: 4600 + 460 = 5060
Step 12: 5060 + 460 = 5520
Step 13: 5520 + 460 = 5980
Step 14: 5980 + 460 = 6440
Step 15: 6440 + 460 = 6900
Step 16: 6900 + 460 = 7360
Step 17: 7360 + 460 = 7820
Step 18: 7820 + 460 = 8280
Step 19: 8280 + 460 = 8740
Step 20: 8740 + 460 = 9200
Step 21: 9200 + 460 = 9660
Step 22: 9660 + 460 = 10120
Step 23: 10120 + 460 = 10580
Step 24: 10580 + 460 = 11040
Step 25: 11040 + 460 = 11500
Step 26: 11500 + 460 = 11960
Step 27: 11960 + 460 = 12420
Step 28: 12420 + 460 = 12880
Step 29: 12880 + 460 = 13340
Step 30: 13340 + 460 = 13800
Step 31: 13800 + 460 = 14260
Step 32: 14260 + 460 = 14720
Step 33: 14720 + 460 = 15180
Step 34: 15180 + 460 = 15640
Step 35: 15640 + 460 = 16100
Step 36: 16100 + 460 = 16560
Step 37: 16560 + 460 = 17020
Step 38: 17020 + 460 = 17480
Step 39: 17480 + 460 = 17940
Step 40: 17940 + 460 = 18400
Step 41: 18400 + 460 = 18860
Step 42: 18860 + 460 = 19320
Step 43: 19320 + 460 = 19780
Step 44: 19780 + 460 = 20240
Step 45: 20240 + 460 = 20700
Step 46: 20700 + 460 = 21160
Step 47: 21160 + 460 = 21620
Step 48: 21620 + 460 = 22080
Step 49: 22080 + 460 = 22540
Step 50: 22540 + 460 = 23000
Step 51: 23000 + 460 = 23460
Step 52: 23460 + 460 = 23920
Step 53: 23920 + 460 = 24380
Step 54: 24380 + 460 = 24840
Step 55: 24840 + 460 = 25300
Step 56: 25300 + 460 = 25760
Step 57: 25760 + 460 = 26220
Step 58: 26220 + 460 = 26680
Step 59: 26680 + 460 = 27140
Step 60: 27140 + 460 = 27600
Step 61: 27600 + 460 = 28060
Step 62: 28060 + 460 = 28520
Step 63: 28520 + 460 = 28980
Step 64: 28980 + 460 = 29440
Step 65: 29440 + 460 = 29900
Step 66: 29900 + 460 = 30360
Step 67: 30360 + 460 = 30820
Step 68: 30820 + 460 = 31280
Step 69: 31280 + 460 = 31740
Step 70: 31740 + 460 = 32200
Step 71: 32200 + 460 = 32660
Step 72: 32660 + 460 = 33120
Step 73: 33120 + 460 = 33580
Step 74: 33580 + 460 = 34040
Step 75: 34040 + 460 = 34500
Step 76: 34500 + 460 = 34960
Step 77: 34960 + 460 = 35420
Step 78: 35420 + 460 = 35880
Step 79: 35880 + 460 = 36340
Step 80: 36340 + 460 = 36800
Step 81: 36800 + 460 = 37260
Step 82: 37260 + 460 = 37720
Step 83: 37720 + 460 = 38180
Step 84: 38180 + 460 = 38640
Step 85: 38640 + 460 = 39100
Step 86: 39100 + 460 = 39560
Step 87: 39560 + 460 = 40020
Step 88: 40020 + 460 = 40480
Step 89: 40480 + 460 = 40940
Step 90: 40940 + 460 = 41400

So, 460*90 = 41400