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.

Q: ['p', 'V', '673', '8483', 'S']

A: 9156
****
Q: ['h', '2295', '2913', 'I', '5273', 'L', '2739', '8227', '6537', 'e', '6491', '5463', 'i', '4337', '537']

A: 44812
****
Q: ['r', '5945', '6083', 'K', 'u', 'C', '5613']

A:
17641
****