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', 'L', '4793', '7689', '6861', 'z', '8507', 'd', '75', '2197', 'N', 'm', 'g', '5159', 'f', 'i', 'O', '1171', 's', 'Y', 'B', '4219', 'u', 'S', 'N', '3615', '2163', 'y', 'D', '8737']