title: Human readable numbers
body: <p>Is there an easy way and dynamic way to format numbers in a string to be human readable? For example turn <code>10000000000</code> into <code>10,000,000,000</code>. I have seen <a href="https://stackoverflow.com/questions/26998485/rust-print-format-number-with-thousand-separator">this</a> question but the answers are outdated and broken (the one with the example).</p>