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.

['h', '2335', '2669', '6035', '9901', '7721', 's', '6181', 'C', 'l', 'x', '8275', '1103', 'S', '6447']
50667

['9869', '7701', 'H', 'o', 'v', '1431', 'O', 'L']
19001

['8817', 'c', 'r', 'E', '8183', 'X', '9101', 'Q', 'k', '4153', 'e', '1747', '513', '9161', '1111', '5147', 'r', 'M', 'A']

47933