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.
['E', '5613', '3217', '9993', 'u', 'z', 'S', '4537', 'L', '6777', 'R', '5855', 'B', 'n', 'C', 'U', '823', 'i', '5747', '3021', 'P', 'O', '2969', '187']