Alright, let's solve this math problem step by step. First, we have the number 275. Next, we see the multiplication sign, which means we need to multiply something. And what are we multiplying it by? We multiply it by 45. So, we're going to take the number 275 and add it to itself 45 times.
Step 1: 0 + 275 = 275
Step 2: 275 + 275 = 550
Step 3: 550 + 275 = 825
Step 4: 825 + 275 = 1100
Step 5: 1100 + 275 = 1375
Step 6: 1375 + 275 = 1650
Step 7: 1650 + 275 = 1925
Step 8: 1925 + 275 = 2200
Step 9: 2200 + 275 = 2475
Step 10: 2475 + 275 = 2750
Step 11: 2750 + 275 = 3025
Step 12: 3025 + 275 = 3300
Step 13: 3300 + 275 = 3575
Step 14: 3575 + 275 = 3850
Step 15: 3850 + 275 = 4125
Step 16: 4125 + 275 = 4400
Step 17: 4400 + 275 = 4675
Step 18: 4675 + 275 = 4950
Step 19: 4950 + 275 = 5225
Step 20: 5225 + 275 = 5500
Step 21: 5500 + 275 = 5775
Step 22: 5775 + 275 = 6050
Step 23: 6050 + 275 = 6325
Step 24: 6325 + 275 = 6600
Step 25: 6600 + 275 = 6875
Step 26: 6875 + 275 = 7150
Step 27: 7150 + 275 = 7425
Step 28: 7425 + 275 = 7700
Step 29: 7700 + 275 = 7975
Step 30: 7975 + 275 = 8250
Step 31: 8250 + 275 = 8525
Step 32: 8525 + 275 = 8800
Step 33: 8800 + 275 = 9075
Step 34: 9075 + 275 = 9350
Step 35: 9350 + 275 = 9625
Step 36: 9625 + 275 = 9900
Step 37: 9900 + 275 = 10175
Step 38: 10175 + 275 = 10450
Step 39: 10450 + 275 = 10725
Step 40: 10725 + 275 = 11000
Step 41: 11000 + 275 = 11275
Step 42: 11275 + 275 = 11550
Step 43: 11550 + 275 = 11825
Step 44: 11825 + 275 = 12100
Step 45: 12100 + 275 = 12375

So, 275*45 = 12375