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]: ['2215', '4369', 'e', '4979', '4069', 'J', 'L', '789', 'w', 'p', '9533', '8523', '2531']
[A]: 37008


[Q]: ['z', '447', '9781', 'R', '6083', 'u', '9229', 'Z', 'F', '2437', '9677', 'n', 'G', '6763', '5883', 'B', '9563', '4575']
[A]: 64438


[Q]: ['M', 'e', 'E', 'u', 'y']
[A]:
0