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.

['E', 'y']
0

['1395', '3605', '6001', 's', 'h', 'T', 'K', 'X', '9413', 'X', '5099', 'c', 'f', 't', 'S', 'f', '4651']
30164

['8039', '265', '8885', '6791', '9809', 'T', 'd', '8611', 'h', 'o', '8545', 'U', '4321', '3671', 'd', '9673', 'b', 'R', 'K']

68610