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: ['z', '447', '9781', 'R', '6083', 'u', '9229', 'Z', 'F', '2437', '9677', 'n', 'G', '6763', '5883', 'B', '9563', '4575']

Answer: 64438


Question: ['6011', 'G', '9043', '8009', 'e', '9493', 'G', '7969', 'M', 'n', 'p', 'g', '7925', 'H', '3213', '8095', '97', 'F']

Answer: 59855


Question: ['C', '6987', '4291', '4545', '4557', 'E', 'O', 'z', '6471', 'F', 'R', '6037', 'y', '1233']

Answer:
34121