below that : date september 6th september 7th september 8th september 9th september 10th september 11th september 12th september 13th september 14th september 15th september 16th september 17th miles 28.1 27.0 26.5 28.2 27.9 29.1 28.8 29.5 32.0 32.6 35.5 37.2 total miles 28.1 55.1 81.6 109.8 137.7 166.8 195.6 225.1 257.1 289.7 325.2 362.4 stu took a scrap of paper from his wallet and did some subtraction .