Complex sentence: Peter agrees to pick up Quagmire from one of his clients' house even going so far as to ditching Meg at her violin recital, although a lot of people have done it too as the janitor gives Meg the keys to lock up when she is done.
Split into simpler sentences: Peter agrees to pick up Quagmire from one of his clients' house even going so far as to ditching Meg at her violin recital. Although a lot of people have done it too as the janitor gives Meg the keys to lock up when she is done.