This is the 5575th most frequent Korean word.
문제까지
"Up to the problem" or "until the issue."
Here, '문제까지' implies the extension of effort to include solving math problems.
그는 수학 문제까지 모두 풀었다.
He solved even the math problems.
'문제까지' indicates that even the problems should be included in the submission.
문제까지 포함해서 숙제를 제출하세요.
Please submit the homework, including the problems.
The term '문제까지도' emphasizes that the last problem was not solved due to insufficient time.