*FORBIDDEN MATH!*

  DO NOT WATCH THIS. USE A CALCULATOR INSTEAD. *not for kids - you
  will confuse your teacher and FAIL* YOU HAVE BEEN WARNED. This
  is my first time trying ''lattice multiplication''.... while I
  screwed up at the end, it was kinda fun trying something new for
  the first time... well, trying something thats at least 700 yrs
  old...