The 1947 Stanford Competitive Examination included a version of this problem.

Reference
https://www.cut-the-knot.org/Outline/Arithmetic/DivisionBy72.shtml

Subscribe: https://www.youtube.com/user/MindYourDecisions?sub_confirmation=1

Send me suggestions…

https://t.co/ugSKSrY21y

https://t.co/JvCPyzFkEA

My book recommendations on Facebook. Idk which one is more worrying, the one on the left or the one on the right

Physicists after being brokenhearted be like: (Submitted by @Samujeros)

https://t.co/1Y6464rsBd