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.

['1319', '6105', '1119', 'c', 'p', '7617', '5113', 'a', '5115', '6731', '6693']
39812

['6055', 'v', '9455', 'A', '6817', 'D', '9339', 't', 'K', '1993']
33659

['u', '4045', '3121', '627', 'i', '621', 'U', '1453', 'r', 'f', '9163', 'T', 'k', 'q']

19030