Without delay, let's solve this. We've got 954 and we will be multiplying it by 20, that is, adding 954 to itself 20 times.
Step 1: 0 + 954 = 954
Step 2: 954 + 954 = 1908
Step 3: 1908 + 954 = 2862
Step 4: 2862 + 954 = 3816
Step 5: 3816 + 954 = 4770
Step 6: 4770 + 954 = 5724
Step 7: 5724 + 954 = 6678
Step 8: 6678 + 954 = 7632
Step 9: 7632 + 954 = 8586
Step 10: 8586 + 954 = 9540
Step 11: 9540 + 954 = 10494
Step 12: 10494 + 954 = 11448
Step 13: 11448 + 954 = 12402
Step 14: 12402 + 954 = 13356
Step 15: 13356 + 954 = 14310
Step 16: 14310 + 954 = 15264
Step 17: 15264 + 954 = 16218
Step 18: 16218 + 954 = 17172
Step 19: 17172 + 954 = 18126
Step 20: 18126 + 954 = 19080

So, 954*20 = 19080