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: ['6849', 'I', 'p', 's', 'L', '4757', 'j', 'x', 'm', 'P', '5237', '1105', '9015', '9279', 'Q']

Answer: 36242


Question: ['61', '5695', 'u', '253', 'n', '1035', 'd', '3017']

Answer: 10061


Question: ['8149', '7843', 'Z', '2887', 'P', '1257', 'W', 'H', '6453', '4415', '6265', 'e', 'S', 'G', '4633', 'D']

Answer:
41902