If your question is related to reserved instances of a VM it's easy:
Use the Azure Price Calculator
Add virtual machine to the calculation
Choose the location and VM SKU
Choose "Pay As You Go" and enter 240 hours
Change to "1 year reserved" or "3 years reserved" (Calculation of the price is based on 24h/7days per week - 730 hours per month)
Compare the prices for "compute".
For example:
Maybe this is helpful.
Regards
Andreas Baumgarten
(Please don't forget to Accept as answer if the reply is helpful)