How do I add a formula in Inventory Analysis?

In the Inventory [Analysis] manu, you can add any formula you like to analyze the value of your product.

If you go to the [Reports] - [Analysis] to see all of the default analytical functions on display. Click [Formula Settings] located in the upper right corner to check the formula values provided by default.

If you want to add a desired formula instead of an existing value, click [+ Add formula] to add the formula you want by simply adding or directly entering the formula! 
It's simpler than you think, right? 😁