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: ['8665', '6083', '9819', 'H', 'p', 'S', 'R', '4311', 'R', '7193']

Answer: 36071


Question: ['3629', '8785', '9537', '8479', '3523', 'c', 'C', '5093', '2405', 'y', '1145', '8987', 'f']

Answer: 51583


Question: ['L', '2531', '1069', 'f', '455', 'q', '1125', '153', 'o', 'n', '4763']

Answer:
10096