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

Answer: 36071


Question: ['1057', '3937']

Answer: 4994


Question: ['4913', '3523', '4577', '6153', '527', 'i', 'M', '6943', 'w', '481', '2661', '4039', '9319', '3987']

Answer:
47123