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This cache is NOT to be found at the above coordinates. The coords above ARE a good paved place to park to begin your hunt, only about 600 feet from the cache.
There are many different flavors of abacuses (abaci?), this one is Japanese. Known as Soroban, or "Counting Tray", many arithmetic operations can be performed very quickly on this device by a skilled user. Your task is much simpler, to read out a pair of numbers as displayed in the two pictures below, to determine the actual North and West coordinates of this puzzle cache.