Without delay, let's solve this. We've got 977 and we will be multiplying it by 7, that is, adding 977 to itself 7 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

So, 977*7 = 6839