Calculating base resistor on mosfet AO3400A

[Demon]

Using datasheet:
https://www.aosmd.com/res/datasheets/AO3400A.pdf

My work so far:

I added tD(ON) and tr to get total t

Google AI says:
Ig = Qg / t

Ig = 6 nC * (3 ns + 2.5 ns)
Ig = 6 * 5.5
Ig = 33

And this is my first hurdle; what unit is Ig? mA? uA? nA? I'm seeing contradicting results on forums.

Google AI says "typically nA", but that's not a definitive answer to me.