Discord.js how to input a number and return an operation

Question

Hi! I'm currently making a Discord Bot, but I've never use JavaScript before, so I want to know how can I input a number and my bot gives me an answer (I want to calculate an Argentinian Taxes that is 64%)

For example

I use
*ar impuesto 100
The bot has to send me $164 ARS as a message.

Answer 1

Write a function with parameter and return calculated value!