4,186 Joules = 1,000 heat calories = 1 food Calorie Using the above conversions, calculate how many times (and how many flights of steps) a 150 lb person would have to climb the Sears Tower located in downtown Chicago if they ate a 500 Cal piece of apple pie and drank a 150 Cal soft drink. The Sears Tower is 1,450 feet high and has 110 flights of steps. Be sure to use the appropriate SI units!