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]: ['W', '8593', '9427', '9931', '8919', 'X', 'B', '8861', '1933', 'Z', 'V', '3427', 'S', '8717', 'd', '1593', '7659', 'Q', 'n']
[A]: 69060


[Q]: ['W', 'c', 'P', '425', '4133', 's', '1831', '883', '2531', '681', 'U', 'B', 'H', '237', '4245']
[A]: 14966


[Q]: ['C', '2967', '3515', 'W', 'M', 'J', 'k', 'E', 't', 'u', 'G', 'W', '2621', '5359', 'G', 'w']
[A]:
14462