My 6th quest (yes I'm making a list!) was the cola float 14 steps and i finished it in about a day due to my super efficient "quest farrm" lol. Can't remember exactly how many coins i got perhaps 30 million but not sure!! On my 9th now and they have all been much simpler but i don't mind as it gives me time to get into a routine. Think 20 hrs is about right for me anyway to start new one. Worked out the were 9 cash facilities i don't have and so far none of those have come up but i am sure i will be tempted!!!