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: ['2151', '7511']

Answer: 9662


Question: ['E', 'v', 'l', 'c', 'g', '3929', 'q', 'j']

Answer: 3929


Question: ['f', '9557', 'i', '8023', 'z', '6257', 'g']

Answer:
23837