Method Mult

library/cpp/expression/expression_variable.cpp:294–296

    return ToDouble() - secondOperand.ToDouble();
}
double TExpressionVariable::Mult(const TExpressionVariable& secondOperand) const {
    return ToDouble() * secondOperand.ToDouble();
}
double TExpressionVariable::Div(const TExpressionVariable& secondOperand) const {
    double denominator = secondOperand.ToDouble();
    if (denominator == 0) {