Without delay, let's solve this. We've got 384 and we will be multiplying it by 15, that is, adding 384 to itself 15 times.
Step 1: 0 + 384 = 384
Step 2: 384 + 384 = 768
Step 3: 768 + 384 = 1152
Step 4: 1152 + 384 = 1536
Step 5: 1536 + 384 = 1920
Step 6: 1920 + 384 = 2304
Step 7: 2304 + 384 = 2688
Step 8: 2688 + 384 = 3072
Step 9: 3072 + 384 = 3456
Step 10: 3456 + 384 = 3840
Step 11: 3840 + 384 = 4224
Step 12: 4224 + 384 = 4608
Step 13: 4608 + 384 = 4992
Step 14: 4992 + 384 = 5376
Step 15: 5376 + 384 = 5760

So, 384*15 = 5760