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.

Input: Consider Input: ['t', 'G', '217', 'W', 'l', 'j', 'd', 'U', '6795', '1609', 'n', '6919', '617', '5753']

Output: 21910


Input: Consider Input: ['M', '5201', '2787', 'z', '9465', 'X', 'X', '4017', '8305', 'y', '6897', 'y', '6045', '9863', 's', 'd', '3611', 'l', 'd']

Output: 56191


Input: Consider Input: ['Z', 'i', 'H', 'f', 'Q', 's', 'I', 'q', 'T', '9921', '8037', '7907', 'g', '7547']


Output: 33412