Let's get this math done. We have 977 and we're going to multiply it by 9. This is the same as taking 977 and adding it to itself 9 times.
Step 1: 0 + 977 = 977
Step 2: 977 + 977 = 1954
Step 3: 1954 + 977 = 2931
Step 4: 2931 + 977 = 3908
Step 5: 3908 + 977 = 4885
Step 6: 4885 + 977 = 5862
Step 7: 5862 + 977 = 6839
Step 8: 6839 + 977 = 7816
Step 9: 7816 + 977 = 8793

So, 977*9 = 8793