Subnet division of the cnetwork-answer questions from students

A student asked me a question a few days ago, but I know little about the internet. So I asked my teacher, and I will get the answer today!

IP :***.***.***.***
Mask: 255.255.255.0
It is divided into six subnets. How many computers can each subnet have?

The answer is as follows: This question cannot be computed, because to divide subnets, it must be a power of 2 to n; otherwise, it cannot be divided.

Some people say that this question is very difficult, but I can tell you that this question does not have to be replaced by your binary. It takes only two steps to do this.

First, you need to determine whether the number of groups to be divided is the power of 2.
If yes, you can simply divide the number of groups by 256. There is no need to calculate two pages as you have said, which is a waste of national resources. Let's try another simple method! After judgment, you can simply divide it!