OK, let's crack this. We're given 994 and our task is to multiply it by 15. Essentially, we'll be adding 994 to itself 15 times.
Step 1: 0 + 994 = 994
Step 2: 994 + 994 = 1988
Step 3: 1988 + 994 = 2982
Step 4: 2982 + 994 = 3976
Step 5: 3976 + 994 = 4970
Step 6: 4970 + 994 = 5964
Step 7: 5964 + 994 = 6958
Step 8: 6958 + 994 = 7952
Step 9: 7952 + 994 = 8946
Step 10: 8946 + 994 = 9940
Step 11: 9940 + 994 = 10934
Step 12: 10934 + 994 = 11928
Step 13: 11928 + 994 = 12922
Step 14: 12922 + 994 = 13916
Step 15: 13916 + 994 = 14910

So, 994*15 = 14910