Rather than get into a pissing contest, look up Hubble and Einstein and how Einstein got his formula(s) wrong (which he admitted himself).

However, the base units of the theory are still applicable, even without the incorrect constant:
“Space-time tells matter how to move; matter tells space-time how to curve”.

Add to that the findings from Hubble, which means that as time passes, the circumference gets larger and there you will see that a precise answer at the moment of writing this reply shan't be the right answer at the time of you reading it.

Apart from that, it still doesn't change the number of degrees in a circle. That remains constant throughout all changes in distance from the central point of measurement.

As an example of there not being a "constant", consider earthquakes and their affects on the earths rotation.
Which again opens up the topic of "fine tuning".

Sorry for the snarky comment yesterday.