Without delay, let's solve this. We've got 655 and we will be multiplying it by 18, that is, adding 655 to itself 18 times.
Step 1: 0 + 655 = 655
Step 2: 655 + 655 = 1310
Step 3: 1310 + 655 = 1965
Step 4: 1965 + 655 = 2620
Step 5: 2620 + 655 = 3275
Step 6: 3275 + 655 = 3930
Step 7: 3930 + 655 = 4585
Step 8: 4585 + 655 = 5240
Step 9: 5240 + 655 = 5895
Step 10: 5895 + 655 = 6550
Step 11: 6550 + 655 = 7205
Step 12: 7205 + 655 = 7860
Step 13: 7860 + 655 = 8515
Step 14: 8515 + 655 = 9170
Step 15: 9170 + 655 = 9825
Step 16: 9825 + 655 = 10480
Step 17: 10480 + 655 = 11135
Step 18: 11135 + 655 = 11790

So, 655*18 = 11790