How give your users the ability to withdraw tokens ERC20 worth a certain amount of USD?

Example:
1 - I have an ERC20 token called MyToken, its current price is $2.00 USD.
2 - I want my contract to pay $10.00 USD to the user with MyToken.

In this case, the contract must pay 5 MyToken on withdrawal.


Does anyone have any simple examples that I can use as a basis?! 🤔