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.

['g', 'M', 'I', 'V', '3377', '7309', '3617', 'v', '9207', 'k', '387', 'g', 'C', '4785', '1527', 'O', 'A']
30209

['2469', 'c', '6931', 'a', '2167', '9493', '9403', '4123', '4949', 'R', 'V', 'h', '315', 'T', '9411', 'M', '1329', '8217', '6105', 'Y']
64912

['3513', 'E', 'B', '3325', '9833', '1223', '6929', '6705', '4913', 'e', '115', '9653', '1231', '7723', 'e', 'i', 'H', 'M']

55163