Hae Chernobyl Incident was the worst nuclear disaster in modern history. In 1986, a combination of a design flaw and improper safety procedures caused a meltdown in Reactor 4 which housed 3600kgs of Plutonium-239
whose half-life is 24,400 years. Current safety procedures estimates that a "safe" amount of Plutonium-239 is
279! That is, the area around Chernobyl will be habitable when the original amount of nuclear fuel is reduced
to 27g. When will this happen? Summarize your result in a complete sentence.