Goku and Beerus made shock waves that reach the Kaioshin realm.
Takes about 6 seconds for the shock waves to get there in the episode.
The universe in Dragon Ball is double the real life (since it has the physical universe plus the afterlife on top of it.) Real life universe is 93 billion light-years, doubling it means 186 billion light-years, or 1.7e+24 km.
> 907 / 588 = 1.5
>1.7e+24 x 1.5 = 2.7e+24 km in diameter (1.3e+24 km radius)
>1.3571759e+24 km in 6 seconds = 2.26196E+26 m/s.
754 quadrillion times faster than light.
It scales to Goku's own speed since he can react to Beerus' explosions.
This was way back in the Battle of Gods arc. Add on all of the bullshit multipliers and training on top.