Standard form of 4+5/10+7/100+9/1000

Find the value of 1715⋅211.though these numbers aren't quite as nice as the ones from the example or the previous part, the procedure is the same, so this is really no more difficult. give the numerator followed by the denominator, separated by a comma.

Which is a reasonable estimate of the amount of water in a small, inflatable pool used by children?

How many ordered pairs of positive integers satisfy xy=32?