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.

['1969', 'm', 'Y', 'N', '7331', 'J', 'b', '2485', 'x']
11785

['1203', '6179', '9835']
17217

['3797', 'z', '8007', 'w', 's', '2077', '243', '9787', 'F', '7625', 'w', '8873', 'k', '6533']

46942