Ayghteen or Eighteen: How To spell?

The word Ayghteen is misspelled against Eighteen, a noun meaning "A symbol denoting eighteen units, as 18 or xviii."

Word begins with consecutive vowels 'EI' followed by alphabets 'ghteen' is misspelled as 'AY'
Wrong Spelling:  ay-ghteen 
Correct Spelling:  ei-ghteen 
Explore spell check of Eighteen to spell without errors.