For when you cannot math but you can make a web request!

Lovingly shitposted by KrofDrakula. Source here.

To calculate a math expression, simply use the following URL to receive a JSON response:

`https://expr.run/`*expression*

Where `expression`

is a math expression that supports the following:

- + - * / operators
- decimal numbers (in the form
`-123.456e-789`

) - functions from
`Math`

can be invoked as expressions (like`atan2(1,2)`

) `pi`

for 𝜋,`e`

for Euler's number- whitespace between tokens is ignored

For example, to compute the Earth's circumference based on mean radius across equator, in meters:

`https://expr.run/6.378137e6*2*pi`

This returns the JSON response:

`{"result":40075016.68557849,"error":null}`

If the result is not computable, `result`

will be `null`

. If there is a parsing error, the `error`

property will be populated with the error message.