Without delay, let's solve this. We've got 92 and we will be multiplying it by 15, that is, adding 92 to itself 15 times.
Step 1: 0 + 92 = 92
Step 2: 92 + 92 = 184
Step 3: 184 + 92 = 276
Step 4: 276 + 92 = 368
Step 5: 368 + 92 = 460
Step 6: 460 + 92 = 552
Step 7: 552 + 92 = 644
Step 8: 644 + 92 = 736
Step 9: 736 + 92 = 828
Step 10: 828 + 92 = 920
Step 11: 920 + 92 = 1012
Step 12: 1012 + 92 = 1104
Step 13: 1104 + 92 = 1196
Step 14: 1196 + 92 = 1288
Step 15: 1288 + 92 = 1380

So, 92*15 = 1380