public abstract BooleanConst GreaterThan(CharConst b);
public abstract BooleanConst LessThan(CharConst b);
public abstract NumberConst Remainder(CharConst b);
public abstract BooleanConst EqualTo(CharConst b);
public abstract NumberConst ExactlyDivide(CharConst b);
public abstract NumberConst Divide(CharConst b);
public abstract NumberConst Multiply(CharConst b);
public abstract NumberConst Minus(CharConst b);
public abstract NumberConst Add(CharConst b);