
function payout(
..
uint256 deduction =  excludeUsd.div(curTotalUsdPool.div(SherXERC20Storage.sx20().totalSupply)).div(10e17);
uint256 deduction =  excludeUsd.mul(SherXERC20Storage.sx20().totalSupply).div(  curTotalUsdPool.mul(10e17) )
