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.

['s', '9377', '3663', '1375', 'j', 'L', '7943', '1711', '7409', '9115', '1227', 'I', 'U']
41820

['q', 'U', 'I', '5245', 'g', 'Y', 's', 'V', 'b', 'V', 'D', '1193', 'p']
6438

['q', '1495', '6259', '2567', 'g', 'A', '5017', '5681', '6527', '1747', '3391', '3071']

35755