the.com/multiple

A number that owes another number money and always pays it back exactly.

means A number that can be divided evenly by another number, with nothing left over.

from From Latin 'multiplex' — 'multi' (many) plus 'plicare' (to fold) — the same root that gives us 'multiply.' The image is literally of folding something over many times, layer upon layer, which is tidier than it sounds: each fold lands exactly where the last one did, no ragged edges.

not divisor
multiple goes up, divisor goes down, people mix them up constantly
infinite supply
every number has infinitely many multiples, zero included oddly
zero exception
zero is a multiple of every number, the ultimate freeloader
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