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]: ['2151', '7511']
[A]: 9662


[Q]: ['i', 'w', '8117', '2823', 'C', 'x', 'w', '5959', 'g', 'e', 'L', 'V', 'i', 'w', 'n']
[A]: 16899


[Q]: ['5107', 'P', '6901', 'P', '8725', '7885', '2927', 'j', '3369', '179']
[A]:
35093