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


[Q]: ['T', '8333', 'C', 'Z', 'n', '1419', 'd', '3205', 'D', '1187', 'd']
[A]: 14144


[Q]: ['F', 'W', 'E', '3595', 'Z', 'Y', 'O', '9481', 'C', 'm', '9465', 't', '3097']
[A]:
25638