Without delay, let's solve this. We've got 332 and we will be multiplying it by 20, that is, adding 332 to itself 20 times.
Step 1: 0 + 332 = 332
Step 2: 332 + 332 = 664
Step 3: 664 + 332 = 996
Step 4: 996 + 332 = 1328
Step 5: 1328 + 332 = 1660
Step 6: 1660 + 332 = 1992
Step 7: 1992 + 332 = 2324
Step 8: 2324 + 332 = 2656
Step 9: 2656 + 332 = 2988
Step 10: 2988 + 332 = 3320
Step 11: 3320 + 332 = 3652
Step 12: 3652 + 332 = 3984
Step 13: 3984 + 332 = 4316
Step 14: 4316 + 332 = 4648
Step 15: 4648 + 332 = 4980
Step 16: 4980 + 332 = 5312
Step 17: 5312 + 332 = 5644
Step 18: 5644 + 332 = 5976
Step 19: 5976 + 332 = 6308
Step 20: 6308 + 332 = 6640

So, 332*20 = 6640