1.
remainder, surplus, leftover
What is left over after division, subtraction, or use. The portion that exceeds what is needed.
Related Words
Related:
余る (verb form (to be left over))
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残り (remainder, rest, remaining)
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余分 (extra, surplus)
Related:
割り算 (division)
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端数 (fraction)
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残余 (remainder)
Related:
商 (quotient)