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', 'Y', '6021', '4045']
10066

['3051', '5343', 'k', 'k', '6815', 'E', '4745', 'A', 'A', '1251', '6649', 'f', '4133', 'X']
31987

['9019', 't', '3201', '2191', '6957', '7213', '1111', 'J', '1317', 'Y', '4635', '1959', '9263']

46866