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.

['K', '9121', 'y', '4233', '1513', 'd', '5609', 'C', 'q', 'p', 'S', '627', 'q', 'I']
21103

['D', '1259', '8927', '3345', '553', '7209', '2507', 'l', 'o', '7317', '1227', '6749', 'S', '3171', 'I', '197', '9577', 'j', 'Q']
52038

['9701', '2351', '2923', 'q', 'x', '7863', 'X', '4363', 'S', 'V']

27201