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.

['K', 'O', 'p', '1669', '8647', '3417', 'a', '8903', 'V', 'E', 'l', 'a', '5177', 'J', '6559', '5377', 'X', '9427']
49176

['i', 'o', '5363', '5937', 'x', '6705', 'w', '5495', 'E', '9823', 'F', '83', '8443', '5223']
47072

['z', '2783', 'Y', 'm', 'b', '9107', '2115', '5395', '3433', 'k', '2229', '7663', '5635', '3201', 'b', 't', 'I']
41561