Tematski: "working from home"

When you enter in a company building you find a lot of people seating in front of the computer all the day long. Some of them maybe had to travel a long time just to get there and seat in front of a computer.
How much money can be saved if instead on seating in front of a computer in the office people could be able to seat in front of the computer at home and do the same work?

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