In this task, you are given an input list. A list contains several comma-separated items written within brackets. You need to return the count of all the numerical elements in the given list. Return 0 if no numerical element in the list.
['R', 'z', 's', 'Z', '6521', 'Z', 'h', '6777', 'U', '9673', 'E', '739', '5863', 'R', 'Z', '9945', '9915', 'G', 'I', '8311', '8761', 'C', 'O', '3493', '1237', 'k', 'N', '5093', '1791', '4337', '2993', 'R', '3929', '2941', 'd', '4467', '6531', '2937']