Conversion from ft/s to mi/r

How do I convert 330ft/s to mi/hr

The Unity Bracket is designed by you to eliminated the unwanted units. It always contain the equivalent units of conversion. It helps for more complicated situations.
Using the Unity Bracket as follows:
330ft/s = 330ft/s * [mi /5280ft] * [3600s/hr] = 330 * 3600 / 5280 mi/hr = 225 mi/hr

330ft/s*(1mile/5280ft)*(3600s/1hr) = 225 miles/hr