If the current value is .50 and we think is should be 2.50, then the share price should be 4 times higher.

2.50- .50 / .50 =4

I respectfully disagree. 2.50 is greater than .50 by a factor of 5.

I don't understand why you subtract .50 from 2.50 before the division. Whatever, we should have a good Christmas.