title: Format a big number to regular
body: <p>Hello cannot found how to do this with php code, hope someone can help me..
  Super simple I have this number <strong>35675000000000000000</strong>, I only have the number of decimals in this case <strong>18</strong>...
  How can I format it to get the correct number <strong>35.675</strong>
  The big number is a crypto balance from the blockchain.</p>
  <p>Regards</p>