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: ['7361', '6913', '3605', '2081', '7619']

A: 27579
****
Q: ['7465', 'G', '105', 'A', '3987', 'O', '7385', 'C', '8957']

A: 27899
****
Q: ['4015', 'F', '8835', '9527', 'v', 'k', '5217', '7653', 'l', '9889', '5337', 'H', 'V', 't', '7121', '8339', 'k', '6601']

A:
72534
****