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]: ['D', 'C', '7295', 'g', 'j', '1387', 'O', '4701', 'B', 'd', 'W', 'b', 's', 'n', 'n', '4917', '2941', '1825', 'x']
[A]: 23066


[Q]: ['O', '6337', 'j', '6009', 'z']
[A]: 12346


[Q]: ['4901', '6415', '3247', '8931', 'f', 'g', 'c', 'S', 'R', '339', '643', 'M', 'G', '5015', 'U', '887', '7723', 'n']
[A]:
38101