The Associative Laws say that it doesn't matter how we group the numbers (i.e. which we calculate first) ... ... when we add : (a + b) + c = a + (b + c). ... or when we multiply : (a Ã b) Ã c = a Ã (b Ã c).
To complete the PCT in two months (or less) you will need to average approximately 43.6 mi / 70.2 km per day (this was my longest day on trail).
In other words, filing through the PCT will give you up to 18 or 19 months more time than you would normally have to file directly in foreign countries. The PCT application will be searched and examined in the office you select for that purpose - what office(s) you may select from depends on where you are a citizen or resident.