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.

[EX Q]: ['2577', 'B', '3059', 'S', 'l', 'T', 'Q', 'x', 'f', 'l', 'y']
[EX A]: 5636

[EX Q]: ['1165', '8341', '9685', '6749', '8571', 'p', '9355', '5319', '9587', 'B', '9581', '1719', 'Q', '577', '8883', 'S', '7851', '1069', 'i', 'y']
[EX A]: 88452

[EX Q]: ['5201', 'V', '205', 'Z', 'o', 'A', 'U', '9705', 'n', 'm', '1589', 'n', '8251', '3261', '2709', 'O', 'f', '7699']
[EX A]:
38620