Link juice question

Hi guys,
I've never figured it out about link juice...could anyone teach me about below?

When putting a link on my tier 1 site which only has one page(homepage), if I put 1 link to money site it means it gives 100% link juice to money site right? So if I put 2 links, does it literally get divided into a 50% each?

Also, link juice flows to internal pages right? If you have only one money site and want to use the full benefit from tier1 site's domain power, then does it mean it is better not to bother making internal pages? (unless you put a link to money site from every page?)

Thanks.

The formula is not public (well pagerank formula is but not how it's used)but you kind of have the right idea. Internal backlinks are Def needed!! This shows G what you want them to see and how you want your site connected. Your own Pagerank does not diminish by having your own internal pages connected. It makes a growing circle of trust between pages.

It's better to have more pages on your tier 1 sites. One page looks super spammy to Google. Even an "about" "contact" and "blog" page would do.

Thanks guys
Yes I do have several pages with my tier1s - but I was wondering *theoretically* it would be better to have only one page. I was not sure if/how much of the juice would come back to home page by interlinking internal pages.

Dont know how BL will get counted. From my knowledge BL will counted which has direct link to money site not to your T1 site.

For e.g i have found one site ranking for long period on first page it has 40k links showing in ahrefs. You mean to say this 40k is counted including the T1 links.