Gary is working on a school project. He calculated the total cost of the project to be $102.47,
where the project cost is based on the percentage of the project work that was finished. He
finished 16 of the project in the first week, 6.25% of the project in the second week, and 2 of the
project in the third week. If Gary took another week to finish all of the remaining project work,
approximately how much did the project work he finished in the last week cost?