Ian is looking to lose some weight.  He decides to start jogging around his apartment complex every night to burn some calories.  He does 5 laps around the complex every night.  Each lap is 100 feet.  If it takes 25 feet of jogging to burn a calorie, how many calories does Ian burn after 5 days of jogging like this?
Please reason step by step, and put your final answer within \boxed{}.
user