Hacker News new | comments | show | ask | jobs | submit login

calculating it the western way (by multiplying and adding each column) is also a trick. it also can't be done in your head with larger numbers. These are just different approaches. when multiplying small numbers (probably most of the time for average person) this may be a faster approach.



Applications are open for YC Summer 2016

Guidelines | FAQ | Support | API | Security | Lists | Bookmarklet | DMCA | Apply to YC | Contact

Search: