Alright, let's solve this math problem step by step. First, we have the number 908. 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 908 and add it to itself 15 times.
Step 1: 0 + 908 = 908
Step 2: 908 + 908 = 1816
Step 3: 1816 + 908 = 2724
Step 4: 2724 + 908 = 3632
Step 5: 3632 + 908 = 4540
Step 6: 4540 + 908 = 5448
Step 7: 5448 + 908 = 6356
Step 8: 6356 + 908 = 7264
Step 9: 7264 + 908 = 8172
Step 10: 8172 + 908 = 9080
Step 11: 9080 + 908 = 9988
Step 12: 9988 + 908 = 10896
Step 13: 10896 + 908 = 11804
Step 14: 11804 + 908 = 12712
Step 15: 12712 + 908 = 13620

So, 908*15 = 13620