Better python calc

import math
#her definerer vi funksjonen
def func():
    operator = input("velg operator: addisjon(+), subtraksjon(-), divisjon(/) eller multiplikasjon(*) ")
    if operator == "addisjon":
        tall1=int(input("addend 1 "))
        print("+")
        tall2=int(input("addend 2 "))
        SUM=tall1+tall2
        print(tall1,"+",tall2,"=",SUM)
        func()
    elif operator == "+":
        tall1=int(input("tall 1 "))
        print("+")
        tall2=int(input("tall 2 "))
        SUM=tall1+tall2
        print(tall1,"+",tall2,"=",SUM)
        func()
    elif operator == "subtraksjon":
        tall1=int(input("subtrahend "))
        print("-")
        tall2=int(input("minuend "))
        differanse = tall1-tall2
        print(tall1,"-",tall2,"=",differanse)
        func()
    elif operator == "-":
        tall1=int(input("tall 1 "))
        print("-")
        tall2=int(input("tall 2 "))
        differanse = tall1-tall2
        print(tall1,"-",tall2,"=",differanse)
        func()
    elif operator == "multiplikasjon":
        tall1=int(input("faktor 1 "))
        print("*")
        tall2=int(input("faktor 2 "))
        produkt = tall1*tall2
        print(tall1,"*",tall2,"=",produkt)
        func()
    elif operator == "*":
        tall1=int(input("tall 1 "))
        print("*")
        tall2=int(input("tall 2 "))
        produkt = tall1*tall2
        print(tall1,"*",tall2,"=",produkt)
        func()
    elif operator == "divisjon":
        tall1=int(input("dividend "))
        print("/")
        tall2=int(input("divisor "))
        kvotient = tall1/tall2
        print(tall1,"/",tall2,"=",kvotient)
        func()
    elif operator == "/":
        tall1=int(input("tall 1 "))
        print("/")
        tall2=int(input("tall 2 "))
        kvotient = tall1/tall2
        print(tall1,"/",tall2,"=",kvotient)
        func()
    else:
        func()
#her kjører vi funksjonen
func()