This is the heir apparent to an archived geocache that was at the posted coordinates. While that cache is no more, this cache should be convenient for anyone visiting this area.
A bit of math to get the coordinates for an easy search to follow.
Consider this number, and let's call it A: 116.18535
B will be a smaller number that is 33.439012 percent of A (a bit more than a third of it).
Now subtract B from A, and let's call that C (not surprisingly, C is about two-thirds the size of A).
B and C give you the North and West cache coordinates in decimal degree format, but for ease of reference you can use this converter to put them into a more familiar form.