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: ['Q', '8841', 'H', 'v', '2435', '8221', '807', 'P', '2247', 'M', '4609', '5657', 'k', '2807', 'j', '8451']

Answer: 44075


Question: ['G', 'Z', '4819', '9763', '9987']

Answer: 24569


Question: ['K', 't', '3705', 'T', '8525', 'n', '2077', 'F', '6107', 'X', '895', 'o', 'H', '4507', 'A', '8495', '6459', 'T']

Answer:
40770