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]: ['s', '9377', '3663', '1375', 'j', 'L', '7943', '1711', '7409', '9115', '1227', 'I', 'U']
[A]: 41820


[Q]: ['2625', '1611', 'E', '4507', '3013', '1569', 'M', '2607', '1111', 'W']
[A]: 17043


[Q]: ['y', 'H', 't', 't', 'T', '8025', '8729', '9367', '3167']
[A]:
29288