You can put this solution on YOUR website! You just need to know what each individual unit conversion is.
1 inch = 2.54 cm.
60 sec = 1 min.
60 min = 1 hour.
You begin with 40 cm^3 per second, and you want how many inch^3 per hour. =?
(The typesetting is not perfect; there is supposed to be a space between the "1" and the "in/cm"...)