hi why will we get this error in FunC?

Error: Func compilation error: contracts/jetton/jetton.fc:223:50: error: cannot apply expression of type int to an expression of type (): cannot unify type () -> ??298 with int
int claimableAmount = muldiv(my_balance(), 10 , 100);


int claimableAmount = muldiv(my_balance(), 10 , 100);