You're writing an excruciatingly detailed alternate history novel set in a world where [Daniel Gabriel Fahrenheit](https://en.wikipedia.org/wiki/Daniel_Gabriel_Fahrenheit) was never born.

Since Fahrenheit never lived the world kept on using the [Rømer scale](https://en.wikipedia.org/wiki/R%C3%B8mer_scale), invented by fellow Dane [Ole Rømer](https://en.wikipedia.org/wiki/Ole_R%C3%B8mer) to this very day, skipping over the Fahrenheit and Celsius scales entirely.

Your magnum opus contains several thousand references to temperature, but those temperatures are all currently in degrees Celsius. You don't want to convert everything by hand, so you've decided to write a function, `celsius_to_romer()` that takes a temperature in degrees Celsius and returns the equivalent temperature in degrees Rømer.

For example: `celsius_to_romer(24)` should return `20.1`.

Difficulty: EASY
Starter code: def celsius_to_romer(temp):
	

Solutions:
def celsius_to_romer(temp):
	return temp * 21 / 40 + 7.5


def celsius_to_romer(c):
	return c * 21 / 40 + 7.5


def celsius_to_romer(x):
	return x * 21 / 40 + 7.5


celsius_to_romer = lambda x: x * 21.0 / 40 + 7.5


celsius_to_romer = lambda t: t * 21 / 40.0 + 7.5