For this chain-of-thought reasoning and answer, what was the question?
Billy has already run 6 miles because 1 plus 1 plus 1 plus 1 plus 1 plus plus 1 equals 6. Tiffany has already run 7 miles because 2 plus 2 plus 2 plus 1 / 3 plus 1 / 3 plus 1 / 3 equals 7. Billy has to run 1 mile to tie Tiffany because 7 minus 6 equals 1.
 A: 1
Q: Billy and Tiffany are having a contest to see how can run the most miles in a week. On Sunday, Monday, and Tuesday, Billy runs 1 mile each day and Tiffany runs 2 miles each day. On Wednesday, Thursday, and Friday, Billy runs 1 mile each day and Tiffany runs a 1/3 of a mile each day. On Saturday Tiffany assumes she's going to win and takes the day off. How many miles does Billy have to run on Saturday to tie Tiffany?