What is equivalent to 18.7?

The are many different ways of writing numbers that are equivalent to 18.7 (but 18/7 is not one of them).

18.7 is equivent to 18 and 7/10 ... or 187/10 ... or 1870/100 ... or 374/20 ... or 561/30 ... there are an infinite number of ways of writing fractions that are equivalent to 18.7