We in America use the Fahrenheit scale when talking about temperature. But in other countries around the world, they use Celsius. So, if you want to know how cold or hot it is elsewhere, you may have to resort to a little bit of mathematics.
To convert Fahrenheit degrees into Celsius, subtract 32, multiply by 5 and divide by 9.
To convert Celsius into Fahrenheit, multiply by 9, divide by 5, then add 32. No wonder we Americans never bothered to change over to Celsius!
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