John is decorating his new apartment. He has a 9 foot long wall along which he would like to place a bookcase, a statue, and a chair. The chair is 3 and 2/3 feet wide and the statue is 1 and 4/5 feet wide. The bookcase will take up ¾ of the remaining space along the wall. John has a collection of math books that are each 1/5 foot wide. How many math books can John fit in his bookcase?