And to do it the other way around: 72 Fahrenheit is 40/2, which is 20 Celsius. You can even use 30 instead of 32, if that lets you do the math quicker—the answer will still be close enough.

Celsius being widely used across the world and Fahrenheit is more common in the United States. To convert a Celsius temperature to Fahrenheit, a formula is used which multiplies the Celsius ...

And part and parcel of that is your stubborn refusal to drop Fahrenheit in favor of Celsius. Of course, we admit that Fahrenheit does have some advantages. But are they really enough to justify ...