OK, let's crack this. We're given 875 and our task is to multiply it by 33. Essentially, we'll be adding 875 to itself 33 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

So, 875*33 = 28875