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: ['K', 'p', '97', 'R', '2999', 'u', '7307', '6033', '6431', 'm', 'T']

A: 22867
****
Q: ['6051', '5303', '1509', '2797', 'Z', '4777', '721', '8563', 'K', '63', '9115', 'd', '7305', '9743', '7409']

A: 63356
****
Q: ['a', '4047', 'j', 'D', 'R', '7411', '8137', '6421', 'S', 'Q']

A:
26016
****