A tailor stitches 2 shirts everyday. It takes him 7 hours to stitch a shirt. Each shirt uses 6 buttons and has two pockets. Each shirt costs the tailor $ 2 and he charges the customer $ 6 .  1. How many pockets does the tailor stitch in 9 days?   2. How many shirts does the tailor stitch if he uses 36 buttons?   3. How many dollars does the tailor collect from his customers in 3 days?   4. How many dollars does the tailor earn as profit in 5 days?   5. How many hours does the tailor work in 3 days?