Lua integer division with rest

integerdivision.lua

function integerDivision(dividend, divider)
    if divider == 0 then error("Stupid! You can't divide by 0!") end

    local rest = dividend
    local quotient = 0

    while rest >= divider do
      dividend = dividend - divider
      rest = dividend

      quotient = quotient + 1
    end

    return quotient, rest
end