Sure thing, let's get straight to it. We start with 480 and we're going to multiply it by 81, which means adding 480 to itself 81 times.
Step 1: 0 + 480 = 480
Step 2: 480 + 480 = 960
Step 3: 960 + 480 = 1440
Step 4: 1440 + 480 = 1920
Step 5: 1920 + 480 = 2400
Step 6: 2400 + 480 = 2880
Step 7: 2880 + 480 = 3360
Step 8: 3360 + 480 = 3840
Step 9: 3840 + 480 = 4320
Step 10: 4320 + 480 = 4800
Step 11: 4800 + 480 = 5280
Step 12: 5280 + 480 = 5760
Step 13: 5760 + 480 = 6240
Step 14: 6240 + 480 = 6720
Step 15: 6720 + 480 = 7200
Step 16: 7200 + 480 = 7680
Step 17: 7680 + 480 = 8160
Step 18: 8160 + 480 = 8640
Step 19: 8640 + 480 = 9120
Step 20: 9120 + 480 = 9600
Step 21: 9600 + 480 = 10080
Step 22: 10080 + 480 = 10560
Step 23: 10560 + 480 = 11040
Step 24: 11040 + 480 = 11520
Step 25: 11520 + 480 = 12000
Step 26: 12000 + 480 = 12480
Step 27: 12480 + 480 = 12960
Step 28: 12960 + 480 = 13440
Step 29: 13440 + 480 = 13920
Step 30: 13920 + 480 = 14400
Step 31: 14400 + 480 = 14880
Step 32: 14880 + 480 = 15360
Step 33: 15360 + 480 = 15840
Step 34: 15840 + 480 = 16320
Step 35: 16320 + 480 = 16800
Step 36: 16800 + 480 = 17280
Step 37: 17280 + 480 = 17760
Step 38: 17760 + 480 = 18240
Step 39: 18240 + 480 = 18720
Step 40: 18720 + 480 = 19200
Step 41: 19200 + 480 = 19680
Step 42: 19680 + 480 = 20160
Step 43: 20160 + 480 = 20640
Step 44: 20640 + 480 = 21120
Step 45: 21120 + 480 = 21600
Step 46: 21600 + 480 = 22080
Step 47: 22080 + 480 = 22560
Step 48: 22560 + 480 = 23040
Step 49: 23040 + 480 = 23520
Step 50: 23520 + 480 = 24000
Step 51: 24000 + 480 = 24480
Step 52: 24480 + 480 = 24960
Step 53: 24960 + 480 = 25440
Step 54: 25440 + 480 = 25920
Step 55: 25920 + 480 = 26400
Step 56: 26400 + 480 = 26880
Step 57: 26880 + 480 = 27360
Step 58: 27360 + 480 = 27840
Step 59: 27840 + 480 = 28320
Step 60: 28320 + 480 = 28800
Step 61: 28800 + 480 = 29280
Step 62: 29280 + 480 = 29760
Step 63: 29760 + 480 = 30240
Step 64: 30240 + 480 = 30720
Step 65: 30720 + 480 = 31200
Step 66: 31200 + 480 = 31680
Step 67: 31680 + 480 = 32160
Step 68: 32160 + 480 = 32640
Step 69: 32640 + 480 = 33120
Step 70: 33120 + 480 = 33600
Step 71: 33600 + 480 = 34080
Step 72: 34080 + 480 = 34560
Step 73: 34560 + 480 = 35040
Step 74: 35040 + 480 = 35520
Step 75: 35520 + 480 = 36000
Step 76: 36000 + 480 = 36480
Step 77: 36480 + 480 = 36960
Step 78: 36960 + 480 = 37440
Step 79: 37440 + 480 = 37920
Step 80: 37920 + 480 = 38400
Step 81: 38400 + 480 = 38880

So, 480*81 = 38880