In this task, you are given an input list A. You need to find all the elements of the list that are numbers and calculate their sum.

['Z', 'w', 'M', '2233', '5275', '5277', 's', '971', '7085', '6259', 'V', 'E', '4923', '7365', 'c', 'd', 'c', 'U', 'P']
39388

['1001', 'T', 'w', 'f', 'Q', '4035', 'b', 'q', 'x', 'R']
5036

['6873', 'X', '7207']

14080