A plane requires 330033003300 gallons of fuel and 757575 minutes to make a round trip to Prague, and it takes 570057005700 gallons of fuel and 130130130 minutes to make a round trip to Stockholm.
A pilot is asked to use at least 945009450094500 gallons of fuel and spend at least 240024002400 minutes to make round trips to Prague and Stockholm in his plane.
Let PPP denote the number of round trips to Prague and SSS the number of round trips to Stockholm.