instruction:
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.
question:
['Q', '8841', 'H', 'v', '2435', '8221', '807', 'P', '2247', 'M', '4609', '5657', 'k', '2807', 'j', '8451']
answer:
44075


question:
['187', 'J', 'l', 'p', '1009', 'g', '5817', 'V', 'B', 'Z', '3329', '9253']
answer:
19595


question:
['7075', '7033', 'V', 'y', 'M', 'b', 'q', '1745', 'w', 'L', '5921', '8617', '8383', 'U', '1133', 'W', '547', 'U', '1741', '5215']
answer:

47410