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]: ['M', '9933', '9861', 'f', 'N', 'R', '7625', 'p', 'T']
[A]: 27419


[Q]: ['t', 'G', '217', 'W', 'l', 'j', 'd', 'U', '6795', '1609', 'n', '6919', '617', '5753']
[A]: 21910


[Q]: ['9801', '7023', '1677', '6417', '6809', '5025', '9223', '4471', '1821', '6675', '2511', '8247', 'J', '8287', '8119', '7947', '6027']
[A]:
100080