SUMMARY
When one copies a few million files from one location to another, the status notification will display the number of files copied using the scientific notation. Given that there's space and the notation takes equally as much space, I see no need to do so.

STEPS TO REPRODUCE
1. Create three million files
2. Copy them from A to B
3. Watch the notification

OBSERVED RESULT
Notification displays something like "1,27208e+06 of 3 000 000 files"

EXPECTED RESULT
Notification displays something like "1 272 080 of 3 000 000 files"


SOFTWARE/OS VERSIONS
Operating System: Kubuntu 20.04
KDE Plasma Version: 5.18.5
KDE Frameworks Version: 5.68.0
Qt Version: 5.12.8
Kernel Version: 5.4.0-40-generic