In mathematics, a multiple is the product of any quantity and an integer.
[1] In other words, for the quantities a and b, it can be said that b is a multiple of a if b = na for some integer n, which is called the multiplier.
When a and b are both integers, and b is a multiple of a, then a is called a divisor of b.
If a and b are not integers, mathematicians prefer generally to use integer multiple instead of multiple, for clarification.
], "a is a submultiple of b" has the meaning of "a being a unit fraction of b" (a=b/n) or, equivalently, "b being an integer multiple n of a" (b=n a).