Without delay, let's solve this. We've got 222 and we will be multiplying it by 15, that is, adding 222 to itself 15 times.
Step 1: 0 + 222 = 222
Step 2: 222 + 222 = 444
Step 3: 444 + 222 = 666
Step 4: 666 + 222 = 888
Step 5: 888 + 222 = 1110
Step 6: 1110 + 222 = 1332
Step 7: 1332 + 222 = 1554
Step 8: 1554 + 222 = 1776
Step 9: 1776 + 222 = 1998
Step 10: 1998 + 222 = 2220
Step 11: 2220 + 222 = 2442
Step 12: 2442 + 222 = 2664
Step 13: 2664 + 222 = 2886
Step 14: 2886 + 222 = 3108
Step 15: 3108 + 222 = 3330

So, 222*15 = 3330