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 51. So, we're going to take the number 252 and add it to itself 51 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
Step 26: 6300 + 252 = 6552
Step 27: 6552 + 252 = 6804
Step 28: 6804 + 252 = 7056
Step 29: 7056 + 252 = 7308
Step 30: 7308 + 252 = 7560
Step 31: 7560 + 252 = 7812
Step 32: 7812 + 252 = 8064
Step 33: 8064 + 252 = 8316
Step 34: 8316 + 252 = 8568
Step 35: 8568 + 252 = 8820
Step 36: 8820 + 252 = 9072
Step 37: 9072 + 252 = 9324
Step 38: 9324 + 252 = 9576
Step 39: 9576 + 252 = 9828
Step 40: 9828 + 252 = 10080
Step 41: 10080 + 252 = 10332
Step 42: 10332 + 252 = 10584
Step 43: 10584 + 252 = 10836
Step 44: 10836 + 252 = 11088
Step 45: 11088 + 252 = 11340
Step 46: 11340 + 252 = 11592
Step 47: 11592 + 252 = 11844
Step 48: 11844 + 252 = 12096
Step 49: 12096 + 252 = 12348
Step 50: 12348 + 252 = 12600
Step 51: 12600 + 252 = 12852

So, 252*51 = 12852