Filter out and add up Task
The task is very simple. Given a non-empty string containing numbers, uppercase and lowercase letters, output the sum of the remaining numbers. For example:
a1wAD5qw45REs5Fw4eRQR33wqe4WE

Filtering out all the letters would result into:
 1   5  45   5  4    33   4

The sum of these numbers is 1 + 5 + 45 + 5 + 4 + 33 + 4 = 97. So the output would be 97.
Test Cases
a &gt; 0
0 &gt; 0
5 &gt; 5
10 &gt; 10
a0A &gt; 0
1a1 &gt; 2
11a1 &gt; 12
4dasQWE65asAs5dAa5dWD &gt; 79
a1wAD5qw45REs5Fw4eRQR33wqe4WE &gt; 97

This is code-golf, so the submission with the least amount of bytes wins!
GS2, 2 bytes

Wd


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How it works

W     Read all numbers.
      For input x, this executes map(int, re.findall(r'-?\d+', x)) internally.
 d    Compute their sum.