Hello! So our final answer is 5,200.. Let me show you how I got it!
It's actually quite simple. I broke it into smaller equations..
Step One: 5 * 20 = 100
Step Two: 4 * 13 = 52
Step Three: We multiply our two answers --> 100 * 52 = 5,200
Hope this helped! Let me know if you have any further questions.