Can Someone Check Out These Speed Calculations I Did?

[Lycoris4812]

1. Superhuman --> Subsonic+

Noah can move faster than a car on a highway. Average interstate speed is around 70 mph. Noah can nonuple his speed with two buffs, 1 & 2. 70 mph x 9 = 630 mph. Which is Subsonic+

2. Subsonic --> Massively Hypersonic​

Noah traveld from the core of a large planet to the surface in a couple mintues. This is through a tunnel, so no resistence. Since is a large planet it should be around the size of Uranus. Uranus's diameter is 31,518 miles, which we need to divied by two since hes coming from the core. Which is 15759 miles. Convert miles to meters = 25361652m and divied by 120 = 211347.1m/s. Which is Massively Hypersonic. And Noah can triple his speed, making it Massively Hypersonic+​

3. Thinking Speed​

Noah can increase his thinking speed by a thousandfold. Which is 6.34041e8 or FTL thinking speed.

It's my first time doing something like this, so I would like feedback.