Given an array
of numbers, return a new array of length number
containing the last even numbers from the original array (in the same
order). The original array will be not empty and will contain at least "number" even numbers.
For example:
([1, 2, 3, 4, 5, 6, 7, 8, 9], 3) => [4, 6, 8]
([-22, 5, 3, 11, 26, -6, -7, -8, -9, -8, 26], 2) => [-8, 26]
([6, -25, 3, 7, 5, 5, 7, -3, 23], 1) => [6]