Let's roll up our sleeves and solve this. We have 735 and we're going to multiply it by 20, essentially adding 735 to itself 20 times.
Step 1: 0 + 735 = 735
Step 2: 735 + 735 = 1470
Step 3: 1470 + 735 = 2205
Step 4: 2205 + 735 = 2940
Step 5: 2940 + 735 = 3675
Step 6: 3675 + 735 = 4410
Step 7: 4410 + 735 = 5145
Step 8: 5145 + 735 = 5880
Step 9: 5880 + 735 = 6615
Step 10: 6615 + 735 = 7350
Step 11: 7350 + 735 = 8085
Step 12: 8085 + 735 = 8820
Step 13: 8820 + 735 = 9555
Step 14: 9555 + 735 = 10290
Step 15: 10290 + 735 = 11025
Step 16: 11025 + 735 = 11760
Step 17: 11760 + 735 = 12495
Step 18: 12495 + 735 = 13230
Step 19: 13230 + 735 = 13965
Step 20: 13965 + 735 = 14700

So, 735*20 = 14700