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: ['5199', 'h', 'T', 'T', 'l', '1661', 'p']

A: 6860
****
Q: ['3051', '5343', 'k', 'k', '6815', 'E', '4745', 'A', 'A', '1251', '6649', 'f', '4133', 'X']

A: 31987
****
Q: ['U', 'v', 'b', 'g', 'd', '9817', '6079', 'T', '1159', 'k', 'I']

A:
17055
****