In the following number series, two sets are given. Find the wrong number in the given series and answer the question accordingly.
Series I: 210, 315, 630, 1575, 7875
Series II: 2222, 1110, 370, 92.5, 18.5
If P is the wrong number in Series I and Q is the wrong number in Series II, what will be the minimum number added to the average of P and Q to make it a perfect cube?
1
16.3
2
282.5
3
672.9
4
401.5
5
783.5