Originally Posted by HungryHunter

Can you explain again but in real people talk LOL

Im not good at math

He is saying if you spend 64 in the way above (ignore the "n" for now) you will get 300 winnings. For every 64 you spend that way, you get another 300 in winnings. So if you have e.g, 192 to spend (64 x 3), spend 3x what he has put for each runner.