Calculating the percent off the percent

I'm trying to calculate a formula that is the option of a percentage off a percentage. My numbers are:
Item price: $500
Vendor Discount: 20%
Client Discount: 20%
Output should read (500*20%)=400 THEN (400*20%)=320

Is this possible to do all in 1 formula or do I need to just put in separate cells and hide? Also, will it be a problem in the calculation if there is no vendor discount?

Thank you so much. I've been trying to figure this out for too long.

Hi, helpmeplease2019!

This is not an excel problem... just Mathematics...

If you have
[A1] : Item Price
[A2] : Vendor Discount
[A3] : Client Discount

You could try:
=A1*(1-A2)*(1-A3)

Blessings!

Oh man. You're right. Thank you so much! I was making it more difficult than I needed.