Cache is not at the posted coordinates, solve the riddle below to find the cache!
Once upon a time there were four kids. They liked to play outside together until eight o'clock at night. Two of them were boys, two of them were girls. The two girls were playing near a pond and found 8 frogs. The 8 frogs croaked and made lots of noise! One day, the two boys were out biking and came across three trees that looked like they would be fun to climb. They made it up high enough to see the houses of all four kids. Five minutes later their mothers called out that it was dinnertime. One of them would get to eat six meatballs with their spaghetti, the other would eat four pieces of pizza!
How many bikes were there?