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Divide Before Multiply

What it detects​

This detector flags expressions where integer division happens prior to multiplication. Dividing first truncates the result, often yielding zero and producing inaccurate outcomes.

Typical symptoms​

  • Calculations unexpectedly return zero or a rounded-down value
  • Rewards or fees smaller than anticipated

Solidity snippet (v0.8.25)​

pragma solidity ^0.8.25;

contract DivisionOrder {
    function calc(uint256 amount, uint256 rate) external pure returns (uint256) {
        // Precision lost because division occurs before multiplication
        return amount / rate * 100;
    }
}

Why it matters on EVM​

Incorrect ordering of operations can silently reduce payouts or misprice assets, harming user balances and protocol economics.