Create a simple interactive app.

a$)(5$ pts$)$ Add code to the app to ask the user for a number via a prompt call. The number should be displayed on a tag on the corresponding web page with a prefix of Quantity. For example, if $80$ is entered, then you should see this on the web page

Quantity: $80$

b$)(15$ pts $)$ Extend the app to ask the user to enter a percentage amount. The app should compute this percentage of the number entered, and output the result to the web page using a formatted string $-$ with the percentage figure, the quantity and the result. For example, if $50$ is entered as the percentage amount, then you should see this on the web page,

Quantity: $80$

$50\%$ of Quantity, $80,$ is $40$

You should use a template literal to format the output string.