Parser for the site

Attention! the price for the work is conditional and may change

You need to create a parser for the site Bitfinex.com
You need the ability to parse the price of futures in real time from the site and display it taking into account the current rate of the ruble / calculate the percentage ratio between the two different selected futures based on the price difference / to make other calculations on division/multiplying, etc.

I ask you to write only to experienced performers ready for long-term cooperation (more information will be mailed in personal correspondence)