Well, honey, 21 can go into 35 just once. It's like trying to fit into those jeans from high school - it's a tight squeeze, but you can make it work if you really try. Just remember, math doesn't lie - one time is all you're getting with those numbers.
21 can go into 35 once, with a remainder of 14. This is because 21 multiplied by 1 is 21, which is the largest multiple of 21 that is less than 35. Therefore, the answer is 1 with a remainder of 14.