Well, honey, 18 goes into 35 a grand total of 1 time with a remainder of 17. It's like trying to fit into your old jeans after Thanksgiving dinner - it just ain't gonna happen perfectly.
35 times, remainder 7
643 ÷ 35 = ~18.37 or 18 times with a remainder of 13.
18 times, remainder 30
6 times with 18 remaining
It goes in 18 times.
35 times
2
35 times.
6 times
4 times, with a remainder of 8.
1050 / 35 = 30 (times)
35 times