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: ['2625', '1611', 'E', '4507', '3013', '1569', 'M', '2607', '1111', 'W']

A: 17043
****
Q: ['1391', '1719', '8547', 'x', 'a', 'j', '6395', 't', '3421', '6607', 'M', '1645', 'H', 'x', 't']

A: 29725
****
Q: ['S', '3931', '9035', 'n', '1895', '1815', 'J', 'q', 'j', '8991', '9631', '9425']

A:
44723
****