Uploaded June 2015 | Updated September 2026, 1 hour ago

---

After a long day of Excel support I came home and saw that Chandoo had given me homework.
Luckily, a quick array formula can solve it !

chandoo.org/wp/2015/06/05/how-many-hours-did-billy-work-solve-this

twitter.com/kevinlehrbass
myspreadsheetlab.com