Without delay, let's solve this. We've got 48 and we will be multiplying it by 12, that is, adding 48 to itself 12 times.
Step 1: 0 + 48 = 48
Step 2: 48 + 48 = 96
Step 3: 96 + 48 = 144
Step 4: 144 + 48 = 192
Step 5: 192 + 48 = 240
Step 6: 240 + 48 = 288
Step 7: 288 + 48 = 336
Step 8: 336 + 48 = 384
Step 9: 384 + 48 = 432
Step 10: 432 + 48 = 480
Step 11: 480 + 48 = 528
Step 12: 528 + 48 = 576

So, 48*12 = 576