Auto amount entry on Inventory Receipt editing

This is a really tiny thing, but it would save time in the workflow of manually entering batch codes on an inventory receipt. Currently I paste in batch codes from a packing list, and then have to manually type in the amount of the line item that corresponds to that batch code.
Very rarely do I receive a line item split between multiple batch codes, so I nearly always have to just type in the number that is already in front of me on the screen.
For example I have a line of 625 kg whatever malt with a single batch code, I paste in the batch code and then have to manually enter ‘625’.
It would be helpful to have a ‘whole amount’ button in the window which sets the value to the entire amount of the line.