Puzzle #9: Calculator

As a tribute to the old school, can you build a Calculator?

As a tribute to the old school, can you build a Calculator? It should support all 4 operators (+ - x /).

Difficulty: Hard

⁠

For example: "408+3897=" should result in 4305, “12-35=” should result in -23, “9x16=” should result in 144, "36/9=" should result in 4 and so on.

Looking for a bigger challenge? Try the

https://coda.io/d/Puzzle-8_d2Sfr0GCVEL/Bonus-Challenges_suKqU#_lutK-⁠

to add more calculator functions.

Want to print your doc?
This is not the way.

Try clicking the ⋯ next to your doc name or using a keyboard shortcut (

CtrlP

) instead.