How does Betfair's bet matching process work

[tretonis]

Hi, and I am developing a betfair software and need a better understanding of How does Betfair's bet matching process work?

example football

Barcelona
back -> 1.16 lay -> 1:18

Real Madrid
back -> 1:18 lay -> 1:20

Draw
back -> 5.1 lay -> 5:30

In this fictitious example I will make an order back to barcelona odd 1:16 it will be matching?

What is the formula to use in this case?

Lack consider some information to calculate the matching process?

Thanks

[Nick JD]

https://www.youtube.com/watch?v=Bys1lu-18wo