56.5用英语怎么说

In English, the number 56.5 can be written as "fifty-six point five." This number is a decimal, which is a way of representing a fraction in which the denominator is a power of ten. This system of representing numbers was first developed by Arabic mathematicians in the ninth and tenth centuries, and it was later adopted by European mathematicians in the seventeenth century.
Here are some examples of how this number might be used in a sentence:
The average score on the test was 56.5 out of 100.
The temperature outside is 56.5 degrees Fahrenheit.
I bought the dress for $56.5.
In Chinese, the number 56.5 could be written as "五十六点五." Some possible Chinese translations of the example sentences above might be:
这次考试的平均分是五十六点五分。
外面的温度是五十六点五华氏度。
我花五十六点五美元买了这件衣服。