To make money in JavaScript, you can start with freelance projects. There are several websites such as Upwork, Freelancer, and Fiverr where you can find JavaScript related projects. You can also contribute to open source projects on GitHub and earn money through donations or sponsorships. Another option is to create your own JavaScript-based application or website and monetize it through advertising, subscriptions or by offering premium features. Here is a sample code for creating a function that calculates the total revenue earned by selling a product at a given price and quantity:
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