What the F...?

Count the number of 'F' in the following text.

 
"FINISHED FILES ARE THE
RESULT OF YEARS OF SCIENTIFIC
STUDY COMBINED WITH THE
EXPERIENCE OF YEARS"
 
 



Did you manage? So, how many F's did you count?  

Count the number of 'F' in the following text.

Jan Pieter
Atsma
count
number
letter F
Finished Files
Scientific
Study
Experience
Years
funny
stories
brain
tricks
jokes
optical illusions
silly
bogus
humor
puzzle
WHAT THE F WHAT THE F WHAT THE F WHAT THE F WHAT THE F