Jill is doing a little woodwork for a school project. She had a piece of wood 4 feet long. She cut off a piece that was 2 5/8 feet long. She needs to determine how long the piece of wood was that she has left in order to see if she has enough to complete her project. How much does she have left? If she needs 5 more pieces that are each 3/10 of a foot long, does she need more wood?