Why can't I free any internal storage

[AC Question]

After deleting multiple apps and videos from my moto G the used internal storage does not reduce. The sum of the calculated memory from each part of my phone does not add up to the total amount of used storage. It does not allow me to install any more apps after uninstalling up to three other apps.

 

[Quinn Ginzer]

Do you have a SD card installed? Apps installed on the SD card take up space on internal storage also