Have 48 hours in a day

How much time do you have in a day? By using computer, it possible for people to have more time. That means computers help people to save time. We know what happened between old times and these days. There are lots of change. We can go shopping and make reservations on the internet. If I want to buy something, I can buy it without visiting a store. Older people who didn't use computer had to visit a store to buy something. However, these days people who use computer don't have to visit. Make reservations is the same. We can work easily for a short time. Moreover we can see any place where we can't go but we want to go. That is, by using computer, it possible for people to have more time.