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', '6703', 'c', 'c', 'l', '2511', '6507', 'b', '9727', 'l', '1251', 'I', '5231', '91', 'L', 'M', 'd']

A: 32021
****
Q: ['D', 'm', 'P', '2433', '6731']

A: 9164
****
Q: ['D', 's', 'q', 'c', 'g', 'W', 'm', 'y', '2019', 'A', '1573', '6739', 'k', '2325', '2657', 'J']

A:
15313
****