Alright, let's solve this math problem step by step. First, we have the number 875. 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 875 and add it to itself 51 times.
Step 1: 0 + 875 = 875
Step 2: 875 + 875 = 1750
Step 3: 1750 + 875 = 2625
Step 4: 2625 + 875 = 3500
Step 5: 3500 + 875 = 4375
Step 6: 4375 + 875 = 5250
Step 7: 5250 + 875 = 6125
Step 8: 6125 + 875 = 7000
Step 9: 7000 + 875 = 7875
Step 10: 7875 + 875 = 8750
Step 11: 8750 + 875 = 9625
Step 12: 9625 + 875 = 10500
Step 13: 10500 + 875 = 11375
Step 14: 11375 + 875 = 12250
Step 15: 12250 + 875 = 13125
Step 16: 13125 + 875 = 14000
Step 17: 14000 + 875 = 14875
Step 18: 14875 + 875 = 15750
Step 19: 15750 + 875 = 16625
Step 20: 16625 + 875 = 17500
Step 21: 17500 + 875 = 18375
Step 22: 18375 + 875 = 19250
Step 23: 19250 + 875 = 20125
Step 24: 20125 + 875 = 21000
Step 25: 21000 + 875 = 21875
Step 26: 21875 + 875 = 22750
Step 27: 22750 + 875 = 23625
Step 28: 23625 + 875 = 24500
Step 29: 24500 + 875 = 25375
Step 30: 25375 + 875 = 26250
Step 31: 26250 + 875 = 27125
Step 32: 27125 + 875 = 28000
Step 33: 28000 + 875 = 28875
Step 34: 28875 + 875 = 29750
Step 35: 29750 + 875 = 30625
Step 36: 30625 + 875 = 31500
Step 37: 31500 + 875 = 32375
Step 38: 32375 + 875 = 33250
Step 39: 33250 + 875 = 34125
Step 40: 34125 + 875 = 35000
Step 41: 35000 + 875 = 35875
Step 42: 35875 + 875 = 36750
Step 43: 36750 + 875 = 37625
Step 44: 37625 + 875 = 38500
Step 45: 38500 + 875 = 39375
Step 46: 39375 + 875 = 40250
Step 47: 40250 + 875 = 41125
Step 48: 41125 + 875 = 42000
Step 49: 42000 + 875 = 42875
Step 50: 42875 + 875 = 43750
Step 51: 43750 + 875 = 44625

So, 875*51 = 44625