def add(firstnum, secondnum):
    print(firstnum + secondnum)

def subtract(firstnum, secondnum):
    print(firstnum - secondnum)

def multiply(firstnum, secondnum):
    print(firstnum * secondnum)

def divide1(firstnum, secondnum):
    print(firstnum / secondnum)

def divide2(firstnum, secondnum):
    print(firstnum // secondnum)

print(add(4, 5))

