Answer:
850,000
Explanation:
The ten thousand place is the second digit to the left of the comma. In this case, the number is 5. When rounding, you look at the number to the right of it. If the number is five or greater, you round up. If the number is four or less, you round down. The number next to 5 is 4. So you round down to 850,000 instead of 860,000.