Answer:
685 254
Explanation:
The value of a digit increases by a factor of 10 each time you move it one place to the left.
Thus, if you move a digit two places to the left, you increase its value by a factor of 10 × 10 = 100.
Move the 5 from the tens place to the thousands place, and you increase its value from 50 to 5000 (a factor of 100).