Sell Multiplier ? Should it just be 100?

Hey guys I am trying to figure out what
uint256 public sellMultiplier = 125;
function shouldTakeFee(address sender) internal view returns (bool) {
return !isFeeExempt[sender];

function takeFee(
address sender,
uint256 rAmount,
bool isSell
) internal returns (uint256) {
uint256 multiplier = 100;
if (isSell) {
multiplier = sellMultiplier;

This is a bad question. What is the full code? What is your problem? What are you trying to solve? What the hell should I do with this code? Please learn to make good questions or just let it be it.