Okay so this is a simple multiplication problem (for the most part).

If a runner is running at 2.4 m/s what is the distance it will travel in lets say 2 minutes. <----Second time interval

Well first you'd want to convert those minutes into seconds. So there are 120 seconds in 2 minutes.

Now into the multiplication, if for every second the runner is running 2.4 meters then you would multpily 2.4 by however many seconds

(2.4) x 120 = 288 meters