calc3 | Simple javascript calculator for course labs | Apps library

1. I have created a class to have the basic functions of a calculator and the class is named Calculator

    class Calculator:
        def __init__(self, num1, num2):
            self.num1 = num1
            self.num2 = num2
    
        def addition(self, num1, num2):
            finalNum = num1 + num2
            print(finalNum)
    
        def extraction(self, num1, num2):
            finalNum = num1 - num2
            return finalNum
    
        def multiplication(self, num1, num2):
            finalNum = num1 * num2
            return finalNum
    
        def division(self, num1, num2):
            finalNum = num1 / num2
            return finalNum
    
    
    calc = Calculator()
    calc2 = Calculator()
    calc3 = Calculator()
    calc4 = Calculator()
    
    print(calc.addition(14,76))

def calc1(tentative_valuations, previous_buying_price):
  return tentative_valuations - previous_buying_price

#mortgage calculator
def calc2(loanper, previous_buying_price):
  return loanper * previous_buying_price



#indicative paid interest to date **REQUIRES ACCESSOR** ###################
calc3 = int(lookups((ym_between(b, a)[0]), (ym_between(b, a)[1]), 'Cum Interest Paid'))


# #net indicative capital gain today #######################################
calc4 = calc1(tentative_valuations, previous_buying_price) - calc3
#print(calc4)


# #to calculate psf before
def calc5(previous_buying_price, area):
  return previous_buying_price/area

# #to calculate psf after
def calc6(tentative_valuations, area):
  return tentative_valuations/area


#print(calc5(previous_buying_price,area))
#print(calc6(tentative_valuations, area))

# #annualised ##########################################
def calc7():
  return round((((calc6(tentative_valuations, area)/calc5(previous_buying_price, area))**(1/(ym_between(b,a)[0]+ ym_between(b,a)[1]/12))) - 1)*100,2)
#no problem
#print(calc7())

#indicative paid principal to date
calc8 = int(lookups((ym_between(b, a)[0]), (ym_between(b, a)[1]), 'Cumulative Paid Principal'))

#indicative balance 
calc9 = (loanper * previous_buying_price) - calc8

 int add(int n1,int n2) {
 return n1+n2;
   }

  1.Function calc1=add;

  2.Function calc2=(int n1,int n2) {
   return n1+n2;
   };


  3.var calc3=(int n1,int n2)=>{
   n1+n2
  };

  4.var callc=(int n1,int n2) {
  return n1+n2;
   };