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: ['O', 'j', 'Z', 'u', '7427', '4225', '3139', '9993', '9945', '3639', 'h', 'j', 'f', '6511', 'e', '4607', '2741', '4743']

A: 56970
****
Q: ['95', '279', 'y', 'p', '5083', 'X', 'E', '3817']

A: 9274
****
Q: ['1233', '4161', '7259', '9807', 'h', '1585', '8675', 'o', 'D', 'n']

A:
32720
****