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]: ['6217', 'A', '1925', 'o', '1433']
[A]: 9575


[Q]: ['339', 'h', 'd', '7449', 'e', 'u', '5055', '7029', '9009', 'G', 'U', '3', '441', '3273', 'K', '3827', '7069', 'x']
[A]: 43494


[Q]: ['K', '5039', 'm', '4075', 'S', '6943', '2555', 'H', '8665', 'j', '3757', 'E', 'I', '6043', 'S', 'w']
[A]:
37077