Create a function that takes the number of daily average recovered cases $recovers, daily average $newCases, current $activeCases, and returns the number of days it will take to reach zero cases.
endCorona(4000, 2000, 77000) ➞ 39
endCorona(3000, 2000, 50699) ➞ 51
endCorona(30000, 25000, 390205) ➞ 79$recovers will always be greater than daily $newCases.