Answer:
30,000,000
Explanation:
You are given the number 8,531,980,112.45. 
Look at attached place value chart. 
If we go to the left from decimal point, then we have 
- ones;
 - tens;
 - hundreds;
 - thousands;
 - ten thousands;
 - hundred thousands;
 - millions;
 - ten millions;
 - and so on.
 
Digit 3 in the number 8,5 3 1,980,112.45 is on ten millions position, so the value of this digit is 30,000,000