What are these extra calories earned?

rhedog1995

I synced my Pacer app to My Fitness Pal and had burned 322 or something from walking/running. Then I set down the pedometer while I did other exercises. It said 116 calories burned from other exercises. So I should have been at about 438 cals burned so far but it said I earned extra calories and it put me at 525 calories burned. Why does it di this? And what does it mean?