Gamma is factor of simultaneity of quantities of times.
My factor is factor of nonsimultaneity. Don't confuse apples with oranges.
I don't know what is sense for you at all. Let's consider is it correct or not:
For example v=-0.866 c
gamma=2
factor of nonsimultaneity=1.5
Then ,for example ,a rocket travels at v during 10second from you, it has crossed 2,596,202,686 m
You need to define nonsimultaneity. I simply can solve it 10*1.5=15 s'
Your solve is complex (0-(-0.866c)*2,596,202.686 / 2997924582)*2=15 s'