import { BigNumber } from "https://deno.land/x/web3@v0.11.1/types/bignumber.d.ts";
Returns a BigNumber whose value is the integer part of dividing the value of this BigNumber by
n.
x = new BigNumber(5)
y = new BigNumber(3)
x.idiv(y) // '1'
x.idiv(0.7) // '7'
x.idiv('0.f', 16) // '5'