Instaled or Installed: How To spell?

The word Instaled is misspelled against Installed, which is past tense of "Install"

Installed has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings insta & ed which should not be misspelled with single 'L'
Wrong Spelling:  insta-l-ed 
Correct Spelling:  insta-ll-ed 
Explore spell check of Installed to spell without errors.