I saw this on imgur. Seriously the coolest thing I have seen in weeks.
Apparently (now, the internets told me, so it definitely could be wrong) this is a multiplication method that is Japanese in origin. Regardless, it works (try it! I totally did!) and it is awesome. We aware that if you end up with double digits, carry the tens place like you would with any other math. It's amazing!
Seedless Blackberry Freezer Jam
1 day ago