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.

['C', '3133', '2183', '5793', '9305', 'd', 'g', '6501']
26915

['1123', '2765', '9395', '9695', '7963', '3813', '9987', 'y', 'N', 'F', '2757', 'o', 'r', '4827', '3523', 'G', 'j', '9785', 'C']
65633

['b', 'Q', 'E', 'r', '7945', 'P', 'o', 'x']

7945