Over a four-year period. Matt Ewing purchased shares in the Oakmark I Fund. Use the following information: (a) At the end of four years, what is the total amount invested? (b) At the end of four years, what is the total number of mutual fund shares purchased? (Round your intermediate calculations and answer to 4 decimal places.) (c) At the end of four years, what is the average cost for each mutual fund share? (Round your intermediate calculations to 4 decimal places and answer to 2 decimal places.)