        for (uint256 i = 0; i < tokensReceived.length; i++) {
            uint256 balance = IERC20(tokensReceived[i]).balanceOf(address(this));
            require(balance != 0, "ZERO_BALANCE");
            // @dev, this assumes all of `tokensReceived` and `redeemedToken`
            // have the same number of decimals
            uint256 redeemedAmount = (amountIn * balance) / base;   // 10^6 * 10^18 / 10^8*10^6
            amountsOut[i] = redeemedAmount;
        }
