Refer to first returned value of function in python

I want to refer to the first returned element of a function.

I have a function that returnes two values: x2 and y2.

In the next function, I want to refer to the first value. How is that done? An example of my attempt here:

def helper1(x,y):
    return x*2,y*2

def helper2(x,y):
    helper1(x,y)
    a = 2/helper1[0] #here I try to refer to the first element returned of helper1, but doesn't work :( 
    return a

any ideas?

Answer

def helper1(x,y):
    return x*2, y*2

def helper2(x,y):
   a = 2/helper1(x, y)[0]   # how to access to the 1st value of helper1
   return a  # no idea of what is a

print(helper2(3, 4))
#0.3333333333333333