Ingame Shard/Frag calculator

I was thinking it could be nice to have a calculator to tell what would be the total outcome of combining frags/shards. If I were to hit the arrow to upgrade all at the same time, it could show a little window displaying what frags/shards I`ll end up with: x amount(lvl 12) x amount(lvl 3) for example.

It could show it when hovering the arrow, or when clicking it in this same window: 
Do you want blah blah...?
Combining will result in:  x amount(lvl 12) x amount(lvl 3)

Tiny things that improve QoL.