Car is driving at the rate of 58km per hour. how much time will it take to drive for distance of 32 miles? reason?

As we are given

Car is driving at the rate of 58km per hour

First we will have to convert it into miles per hour

As we know that 1 km per hour =0.621371 miles per hour

So we can say 58km per hour=58*0.621371 miles per hour=36.0395 miles per hour

We are supposed to find -"How much time will it take to drive for distance of 32 miles"

As we know that

Distance=Speed*Time

there is only one way to arrange all the eight relative to each other because they are not distinct. we have

now there are nine places to place an (and not more than one in one place).   because we have four symbols, we need to choose four of these nine places to insert an . order does not matter because the are not distinct.

thus there are 1 · c(9,4) ways, or, if we calculate it,

thus there are 126 ways to form such "words."

whats the rest of it?