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: ['P', '6161', 'k', '5925', 'h', 'G', 'n']

A: 12086
****
Q: ['D', 'b', 'h', 'p', '1637']

A: 1637
****
Q: ['p', '5815', 'm', '6551', '2807', 'k', '3745', 'o', 'B', 'H', '6201', 'f', '3631', 'O', '9385', '9783', 'D', '679', '2587']

A:
51184
****