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: ['c', '7415', '6253', '4477', 't', '9449', '7733', '2325', 'Z', '5413', 'q', 'm', 'R', '8619', '7289', '857', '7273', '7425']

A: 74528
****
Q: ['6563', 'R', 'M', 'B', 'b', 'E', '9911', '7327', 'J', '7389', 'w', 'b', 'c', '1527', 'K', 'r', '5441', '6823', '8455']

A: 53436
****
Q: ['9757', 'b', 'f', 'f', 'N', '4243', '1253', 'b', 'v', 'h', '7577', 'X', '8095', 'M', 'D', '7423', 'u']

A:
38348
****