You get to paint your neighbor’s garage. He doesn’t care how long you take to finish. What will your hourly wage be if you paint the garage in eight hours?
What will your hourly wage be if you use sixteen hours to paint the garage?
You can see that the less time you spend on the job, the higher your hourly wage is. In that case, there is nothing left to do but work hard and finish as fast as possible while doing a good job!