OK, let's crack this. We're given 550 and our task is to multiply it by 50. Essentially, we'll be adding 550 to itself 50 times.
Step 1: 0 + 550 = 550
Step 2: 550 + 550 = 1100
Step 3: 1100 + 550 = 1650
Step 4: 1650 + 550 = 2200
Step 5: 2200 + 550 = 2750
Step 6: 2750 + 550 = 3300
Step 7: 3300 + 550 = 3850
Step 8: 3850 + 550 = 4400
Step 9: 4400 + 550 = 4950
Step 10: 4950 + 550 = 5500
Step 11: 5500 + 550 = 6050
Step 12: 6050 + 550 = 6600
Step 13: 6600 + 550 = 7150
Step 14: 7150 + 550 = 7700
Step 15: 7700 + 550 = 8250
Step 16: 8250 + 550 = 8800
Step 17: 8800 + 550 = 9350
Step 18: 9350 + 550 = 9900
Step 19: 9900 + 550 = 10450
Step 20: 10450 + 550 = 11000
Step 21: 11000 + 550 = 11550
Step 22: 11550 + 550 = 12100
Step 23: 12100 + 550 = 12650
Step 24: 12650 + 550 = 13200
Step 25: 13200 + 550 = 13750
Step 26: 13750 + 550 = 14300
Step 27: 14300 + 550 = 14850
Step 28: 14850 + 550 = 15400
Step 29: 15400 + 550 = 15950
Step 30: 15950 + 550 = 16500
Step 31: 16500 + 550 = 17050
Step 32: 17050 + 550 = 17600
Step 33: 17600 + 550 = 18150
Step 34: 18150 + 550 = 18700
Step 35: 18700 + 550 = 19250
Step 36: 19250 + 550 = 19800
Step 37: 19800 + 550 = 20350
Step 38: 20350 + 550 = 20900
Step 39: 20900 + 550 = 21450
Step 40: 21450 + 550 = 22000
Step 41: 22000 + 550 = 22550
Step 42: 22550 + 550 = 23100
Step 43: 23100 + 550 = 23650
Step 44: 23650 + 550 = 24200
Step 45: 24200 + 550 = 24750
Step 46: 24750 + 550 = 25300
Step 47: 25300 + 550 = 25850
Step 48: 25850 + 550 = 26400
Step 49: 26400 + 550 = 26950
Step 50: 26950 + 550 = 27500

So, 550*50 = 27500