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: ['R', '3361', 'c', 'S', 'g', '3829', '7347', '6633', 'e', '9227']

A: 30397
****
Q: ['2577', 'B', '3059', 'S', 'l', 'T', 'Q', 'x', 'f', 'l', 'y']

A: 5636
****
Q: ['5165', 'b', '7803', '1951', 'c', '3705', 'J', '7757', 'T']

A:
26381
****