Alright, let's solve this math problem step by step. First, we have the number 252. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 25. So, we're going to take the number 252 and add it to itself 25 times.
Step 1: 0 + 252 = 252
Step 2: 252 + 252 = 504
Step 3: 504 + 252 = 756
Step 4: 756 + 252 = 1008
Step 5: 1008 + 252 = 1260
Step 6: 1260 + 252 = 1512
Step 7: 1512 + 252 = 1764
Step 8: 1764 + 252 = 2016
Step 9: 2016 + 252 = 2268
Step 10: 2268 + 252 = 2520
Step 11: 2520 + 252 = 2772
Step 12: 2772 + 252 = 3024
Step 13: 3024 + 252 = 3276
Step 14: 3276 + 252 = 3528
Step 15: 3528 + 252 = 3780
Step 16: 3780 + 252 = 4032
Step 17: 4032 + 252 = 4284
Step 18: 4284 + 252 = 4536
Step 19: 4536 + 252 = 4788
Step 20: 4788 + 252 = 5040
Step 21: 5040 + 252 = 5292
Step 22: 5292 + 252 = 5544
Step 23: 5544 + 252 = 5796
Step 24: 5796 + 252 = 6048
Step 25: 6048 + 252 = 6300

So, 252*25 = 6300