[need objects placed centrally on din a6]

hello need your help - im honestly quite a beginner. 

I need 10 lines with 6 circles each and these should be placed reasonably centrally on a Din A6 page. The circles should be at the same distance from each other.

I have already looked on the internet but get no further and the place does not work, but only a big mess. 

I think it is very simple and I very stupid but maybe someone can tell me a good way? 

Thanks and sorry for my English
Victor