Alright, let's solve this math problem step by step. First, we have the number 978. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 13. So, we're going to take the number 978 and add it to itself 13 times.
Step 1: 0 + 978 = 978
Step 2: 978 + 978 = 1956
Step 3: 1956 + 978 = 2934
Step 4: 2934 + 978 = 3912
Step 5: 3912 + 978 = 4890
Step 6: 4890 + 978 = 5868
Step 7: 5868 + 978 = 6846
Step 8: 6846 + 978 = 7824
Step 9: 7824 + 978 = 8802
Step 10: 8802 + 978 = 9780
Step 11: 9780 + 978 = 10758
Step 12: 10758 + 978 = 11736
Step 13: 11736 + 978 = 12714

So, 978*13 = 12714