Sure thing, let's get straight to it. We start with 838 and we're going to multiply it by 20, which means adding 838 to itself 20 times.
Step 1: 0 + 838 = 838
Step 2: 838 + 838 = 1676
Step 3: 1676 + 838 = 2514
Step 4: 2514 + 838 = 3352
Step 5: 3352 + 838 = 4190
Step 6: 4190 + 838 = 5028
Step 7: 5028 + 838 = 5866
Step 8: 5866 + 838 = 6704
Step 9: 6704 + 838 = 7542
Step 10: 7542 + 838 = 8380
Step 11: 8380 + 838 = 9218
Step 12: 9218 + 838 = 10056
Step 13: 10056 + 838 = 10894
Step 14: 10894 + 838 = 11732
Step 15: 11732 + 838 = 12570
Step 16: 12570 + 838 = 13408
Step 17: 13408 + 838 = 14246
Step 18: 14246 + 838 = 15084
Step 19: 15084 + 838 = 15922
Step 20: 15922 + 838 = 16760

So, 838*20 = 16760