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]: ['1073', 'i', 'o', 'j', 'O', 'g', 'X', '3261', '5105', '4831', 'J']
[A]: 14270


[Q]: ['e', '6633', '131', '7459', '3733']
[A]: 17956


[Q]: ['6281', '357', '9705', '6161', 'v', '8203', '9219', 'O', '4947']
[A]:
44873