Without delay, let's solve this. We've got 480 and we will be multiplying it by 28, that is, adding 480 to itself 28 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

So, 480*28 = 13440