In the admin panel of your Joomla website, navigate to Extensions > Manage > Install:
Then upload the downloaded plugin archive to Joomla:
In the plugin settings, click on the Connect account button:
Connect the account to your Joomla website:
If you already have an account, the connection will be performed automatically. If not, you’ll be offered to create one.
Go to the articles’ editor (this page is called Articles: New), and click this button:
In the window that will appear, choose a calculator from the drop-down list and click Embed:
In the editor window, you’ll see an operator for displaying:
Publish the page. Now your form is ready to go!