Alright, let's solve this math problem step by step. First, we have the number 975. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 15. So, we're going to take the number 975 and add it to itself 15 times.
Step 1: 0 + 975 = 975
Step 2: 975 + 975 = 1950
Step 3: 1950 + 975 = 2925
Step 4: 2925 + 975 = 3900
Step 5: 3900 + 975 = 4875
Step 6: 4875 + 975 = 5850
Step 7: 5850 + 975 = 6825
Step 8: 6825 + 975 = 7800
Step 9: 7800 + 975 = 8775
Step 10: 8775 + 975 = 9750
Step 11: 9750 + 975 = 10725
Step 12: 10725 + 975 = 11700
Step 13: 11700 + 975 = 12675
Step 14: 12675 + 975 = 13650
Step 15: 13650 + 975 = 14625

So, 975*15 = 14625