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

['2087', '8171', 'c', 'd', 'a', '5621', 'n']
15879

['b', '3693', 'G', 'e', '4907', '5653', '3833', 'm', '8563', '8709', 'm', '2161', '4159', 'v', '6109', 'o', 'p', '6479']

54266