Is this an example of Calc-Stacking?

[BarryAllen2.0]

Hypothetically Speaking:

If Base Goku was Calced at Mach 500

Frieza was about to Kill him with a ki blast from 10 meters away and Goku was about to go SSJ1 to deflect the attack because his base wasn't fast enough but before he could, Gohan in Ultimate Form blitzes over from 100 meters away and deflects it.

Say The Ki blast travled only 7 meters before Gohan deflected it.

To find Gohans Speed, we need his time. Obviously his time would be the time it took Frieza's Ki blast to travel 7 meters. Instead of scaling from Goku's Mach 500 base speed, you use Lightning speed, Mach 286 as the low end for the Ki blast to avoid Calc Stacking by using Goku's speed.

So:

7 m / mach 286 = 71.92 microseconds (round up to 72)

Now plug for Gohans speed:

100 m / 72 microseconds = 1,388,888.89 m/s (Mach 4049)

That would be Gohan's speed. Would this still be considered Calc stacking because Goku was calced at Mach 500 despite lowering the number for a low end trying not to use Goku's calced speed?

If so, how do you calc such feats without calc-stacking?

 

[SomebodyData]

Why did you use lightning speed?

And no, technically not, but you're making an assumption based on the result of a previous calc, which is about just as bad.

 

[BarryAllen2.0]

Why did you use lightning speed?
And no, technically not, but you're making an assumption based on the result of a previous calc, which is about just as bad.

Lightning speed because it's the Fastest Quantifiable Number that i know that is established yet the lowest that's at least in the ball park of Goku's Mach 500. And if that's the case, would there be a better way to calc this?

 

[SomebodyData]

Well, we can't sadly, unless something like, lightning was passing by at the time and this was done while the lightning moved only 1 meter.