Inline Calculator in Amount field

[wada3n]

Hi,

I'm a big fan of the Denaro. I'd like to request a new feature:

adding a mini calculator next to the Amount field.
This would be especially helpful when shopping for multiple items. Instead of opening a separate calculator ~~ app, users could simply enter the prices of each item and the mini calculator would automatically calculate the total.

I think it would be even better if the inline calculation was available directly in the Amount field. This would make it easy to perform simple calculations directly, and the result would be displayed as soon as you leave the field.

I believe I have seen a request about Mini Calculator before, but I searched and could not find it in the existing issues in the repo.
Initially, I didn't think this feature would be very useful. However, after using the app more frequently, I've realized that it would actually be very helpful.