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.
--------
Question: ['211', '7561', '8725', '6139', 'I', '6585', '4231', 't', '2983', 'T', 'S', '9569', 'R', 'b', 'N', 'X', '9009']

Answer: 55013


Question: ['4529', '7465', 'S', 'Z', 'v', 'w', '5791', '3363', '2643']

Answer: 23791


Question: ['8943', 'o', 'w', 'h', '4623', 'm', '9441', '3109', '7065', '909', 'i', 'u', '4791']

Answer:
38881