Receipt Hub - add record number display x/x on current receipt

Like many people probably do, I let things in my receipt hub pile up and then sort them out in bulk.

On the main page of the hub it gives the total record count:

However while working through them and tagging them there is no indication of how far through the list you have got. It would be really handy to see this to give an idea of how many you have left to do!
eg: (apologies for the crude scribble!)

I assume that this would be a really simple thing to add and would make my chore of going through my collection of receipts much nicer as I could keep track of my progress easily.