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.

[Q]: ['l', '2511', '2071', 'o', 'F', '7583', '1909', '1859', '3299', '3853', 'h', 'P', 'P', '9175', 'B', 'F']
[A]: 32260


[Q]: ['C', 'v', '1353', 'e', 'x', 'A', 'D', '1243', '477', 'z', '3483', '5213', 'k', 'm', 'n']
[A]: 11769


[Q]: ['7991', '2305', '2053', '6519', '9065', 'l', 'c', '1283', 'k', 'Z', 'V', '1901', 'b', '7449', 'r', '9513', '7873']
[A]:
55952