Mathematics.swift

protocol Calculable {
    func addition(intOne: Int, intTwo: Int) -> Int
    func subtraction(intOne: Int, intTwo: Int) -> Int
    func division(int: Int, by: Int) -> Int
}

class Math: Calculable {
   
    func addition(intOne: Int, intTwo: Int) -> Int {
        return intOne + intTwo
    }
    
    func subtraction(intOne: Int, intTwo: Int) -> Int {
        return intOne - intTwo
    }
    
    func division(int: Int, by: Int) -> Int {
        return int / by
    }
}