OK, let's work through this together. We're starting with 988 and we're going to multiply it by 11, which means we add 988 to itself 11 times.
Step 1: 0 + 988 = 988
Step 2: 988 + 988 = 1976
Step 3: 1976 + 988 = 2964
Step 4: 2964 + 988 = 3952
Step 5: 3952 + 988 = 4940
Step 6: 4940 + 988 = 5928
Step 7: 5928 + 988 = 6916
Step 8: 6916 + 988 = 7904
Step 9: 7904 + 988 = 8892
Step 10: 8892 + 988 = 9880
Step 11: 9880 + 988 = 10868

So, 988*11 = 10868