Write a Racket function called numbers-first that accepts a list (say, lst) of numbers and letters. The function should return a new list where all the numbers are listed first before all the letters. In the list, the order of the numbers are listed as they are listed in the original list. The order of the letters will be in reverse order (i. e., starting from the last letter in the original list to the first letter in the original list. Consider using the number