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: ['6051', '5303', '1509', '2797', 'Z', '4777', '721', '8563', 'K', '63', '9115', 'd', '7305', '9743', '7409']

A: 63356
****
Q: ['O', 'K', 's', 'V', '6815', 'c', '9277', 'V', '1783', 'b', 'i', '2045', 'E', 'E', '2035']

A: 21955
****
Q: ['247', '6487', '5559', '3923', '2559', 'p', 'K', '9231', 'U', 's', '355', 'T', 'L']

A:
28361
****