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]: ['29', 'N', '5061', '7191', 'z', '8367']
[A]: 20648


[Q]: ['f', 'F', 'E', '2279', 'r', '6419', 'd', 'M', '3975', '3797', '9201', 'F', 'c', '4753', '959', 'v', '8963', '4007']
[A]: 44353


[Q]: ['M', 'f', '2677', 'r', '1253', '9251', '6997', 'q', '931', 'n', '8283', '2953', 'x', 'g', 'H', '8161', '4265']
[A]:
44771