OK, let's work through this together. We're starting with 275 and we're going to multiply it by 31, which means we add 275 to itself 31 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

So, 275*31 = 8525