Without delay, let's solve this. We've got 551 and we will be multiplying it by 30, that is, adding 551 to itself 30 times.
Step 1: 0 + 551 = 551
Step 2: 551 + 551 = 1102
Step 3: 1102 + 551 = 1653
Step 4: 1653 + 551 = 2204
Step 5: 2204 + 551 = 2755
Step 6: 2755 + 551 = 3306
Step 7: 3306 + 551 = 3857
Step 8: 3857 + 551 = 4408
Step 9: 4408 + 551 = 4959
Step 10: 4959 + 551 = 5510
Step 11: 5510 + 551 = 6061
Step 12: 6061 + 551 = 6612
Step 13: 6612 + 551 = 7163
Step 14: 7163 + 551 = 7714
Step 15: 7714 + 551 = 8265
Step 16: 8265 + 551 = 8816
Step 17: 8816 + 551 = 9367
Step 18: 9367 + 551 = 9918
Step 19: 9918 + 551 = 10469
Step 20: 10469 + 551 = 11020
Step 21: 11020 + 551 = 11571
Step 22: 11571 + 551 = 12122
Step 23: 12122 + 551 = 12673
Step 24: 12673 + 551 = 13224
Step 25: 13224 + 551 = 13775
Step 26: 13775 + 551 = 14326
Step 27: 14326 + 551 = 14877
Step 28: 14877 + 551 = 15428
Step 29: 15428 + 551 = 15979
Step 30: 15979 + 551 = 16530

So, 551*30 = 16530