Answer:
$1,800,000 dollars
Explanation:
Given the following question:
10% of 2,000,000
An app brought in $2 million in revenue before giving 10% of that revenue to pay for prizes. We need to find how much revenue did the app earn AFTER the store paid for the reward prizes.

10% of 2 million is 200,000.

The app earned "$1.8 million" after paying for the reward prizes.
Hope this helps.