The decision to close the remaining reactors was made around a decade ago. It’s simply not possible to flip a switch and turn them back on. There’s no fuel, the reactors have not been maintained and the personnel to run these reactors or perform the maintenance is not here any more. The fuel also has to come from somewhere, and " somewhere" being mostly Russia.
If you have a large stream of people constantly entering or leaving the building, both doors will be open all the time. In a rotating door, people can enter and exit simultaneously and constantly but you still have a working air lock that exchanges less air with the outside than a door that is open all the time.
https://www.wolframalpha.com/input/?i=M%3DK%2B21%2C+(M%2B6)%3D5*(K%2B6)
Kind ist -9 Monate alt. Die Frage ist also genau auf dem zu erwartenden Niveau von eBay Kleinanzeigen.
I agree with everything but using Google sheets. It’s neither free nor open source. You don’t pay with money but with your privacy. Libre office is just as good as a desktop application and is actually FOSS. If you absolutely need the cloud storage, get a provider you can trust, buy the space and sync your files online, after editing locally.