OK, let's crack this. We're given 650 and our task is to multiply it by 30. Essentially, we'll be adding 650 to itself 30 times.
Step 1: 0 + 650 = 650
Step 2: 650 + 650 = 1300
Step 3: 1300 + 650 = 1950
Step 4: 1950 + 650 = 2600
Step 5: 2600 + 650 = 3250
Step 6: 3250 + 650 = 3900
Step 7: 3900 + 650 = 4550
Step 8: 4550 + 650 = 5200
Step 9: 5200 + 650 = 5850
Step 10: 5850 + 650 = 6500
Step 11: 6500 + 650 = 7150
Step 12: 7150 + 650 = 7800
Step 13: 7800 + 650 = 8450
Step 14: 8450 + 650 = 9100
Step 15: 9100 + 650 = 9750
Step 16: 9750 + 650 = 10400
Step 17: 10400 + 650 = 11050
Step 18: 11050 + 650 = 11700
Step 19: 11700 + 650 = 12350
Step 20: 12350 + 650 = 13000
Step 21: 13000 + 650 = 13650
Step 22: 13650 + 650 = 14300
Step 23: 14300 + 650 = 14950
Step 24: 14950 + 650 = 15600
Step 25: 15600 + 650 = 16250
Step 26: 16250 + 650 = 16900
Step 27: 16900 + 650 = 17550
Step 28: 17550 + 650 = 18200
Step 29: 18200 + 650 = 18850
Step 30: 18850 + 650 = 19500

So, 650*30 = 19500