Answer:
6
Step-by-step explanation:
We work from the right to the left here. first the 2 which just represents a 2, then the 7 which is 70, then 5 which is 500, the 4 which is 4,000, then the 9 which is 90,000 and, and then we reach the 6 which represents 600,000, the place where the number represents a value in range of 100,000 to 900,000.
