###Human: Macy has a goal of running a total of 24 miles per week. If she runs 3 miles per day, how many miles does Macy have left to run after 6 days so that she could meet her goal?, ### Assistant: In 6 days, Macy is able to run 3 x 6 = 18 miles.
Therefore, she has 24 – 18 = 6 miles left to run to meet her goal. 
 So the answer is :  6