325 people were natural group six buses were completely filled and 7 people chose to walk how many people did the bus hold?

Your question seems to be written in a confusing way so I am assuming that the question is:

325 people were part of a natural group, six buses were completely filled and 7 people chose to walk how many people did the bus hold?

To find out how many people were taking the bus, we needed to subtract the walking people from all the people.

325 - 7 = 318

318 people had to ride the buses.

Now again since the question is written weird, I dont know if you want to find ut only the people riding the buses, or how many people on each of the six buses. Because of this below I will show how many peope per bus:

Now since we know 318 people are riding the buses, we need to split those people among the six buses.

318 : 6 = 53

53 people were in each bus.

53 Buses. If 7 people chose to walk, 325-7=318. 6 buses were full. So you would then do 318/6. Which equals 53.