I'm trying to understand multiprocessing in python.

```
from multiprocessing import Process

def multiply(a,b):
    print(a*b)
    return a*b

if __name__ == '__main__':
    p = Process(target= multiply, args= (5,4))
    p.start()
    p.join()
    print("ok.")

```

In this codeblock, for example, if there was an variable that called "result". How can we assign return value of multiply function to "result"?

And a little problem about IDLE: when i'm tried to run this sample with Python Shell, it doesn't work properly? If i double click .py file, output is like that:

```
20
ok.

```

But if i try to run this in IDLE:

```
ok.

```

Thanks...