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.

Input: Consider Input: ['P', '6299', '9655', 'l', '6317', '2139', '3347', 'l', '3095', '7363', '3115', '7529', 'R']

Output: 48859


Input: Consider Input: ['T', '8333', 'C', 'Z', 'n', '1419', 'd', '3205', 'D', '1187', 'd']

Output: 14144


Input: Consider Input: ['b', 'B', 'h', 'p', '5605', 'T', 'p', 'G', 'r', '5459', '8417', '8289']


Output: 27770