OK, let's work through this together. We're starting with 516 and we're going to multiply it by 35, which means we add 516 to itself 35 times.
Step 1: 0 + 516 = 516
Step 2: 516 + 516 = 1032
Step 3: 1032 + 516 = 1548
Step 4: 1548 + 516 = 2064
Step 5: 2064 + 516 = 2580
Step 6: 2580 + 516 = 3096
Step 7: 3096 + 516 = 3612
Step 8: 3612 + 516 = 4128
Step 9: 4128 + 516 = 4644
Step 10: 4644 + 516 = 5160
Step 11: 5160 + 516 = 5676
Step 12: 5676 + 516 = 6192
Step 13: 6192 + 516 = 6708
Step 14: 6708 + 516 = 7224
Step 15: 7224 + 516 = 7740
Step 16: 7740 + 516 = 8256
Step 17: 8256 + 516 = 8772
Step 18: 8772 + 516 = 9288
Step 19: 9288 + 516 = 9804
Step 20: 9804 + 516 = 10320
Step 21: 10320 + 516 = 10836
Step 22: 10836 + 516 = 11352
Step 23: 11352 + 516 = 11868
Step 24: 11868 + 516 = 12384
Step 25: 12384 + 516 = 12900
Step 26: 12900 + 516 = 13416
Step 27: 13416 + 516 = 13932
Step 28: 13932 + 516 = 14448
Step 29: 14448 + 516 = 14964
Step 30: 14964 + 516 = 15480
Step 31: 15480 + 516 = 15996
Step 32: 15996 + 516 = 16512
Step 33: 16512 + 516 = 17028
Step 34: 17028 + 516 = 17544
Step 35: 17544 + 516 = 18060

So, 516*35 = 18060