In an arithmetic operation method and an arithmetic operation device arithmetic operations such as exponentiation or scalar multiplication can be performed at high speed. The magnetic recording medium is fabricated so that the upper layer of a recording layer and a refill layer are formed of the same material. The reciprocating shuttle inlet valve and its operating mechanism is constructed as a single and simple uncomplicated member, in combination with the lost-motion abutments, and, formed in a piston skirt, obviating the need for any complex mechanisms or auxiliary drives, unaffected by heat, friction, wear or inertial forces. At least a large number of the sets of teat cups is disposed separately from the feed platform. Also, ambient light for any low frequency interference, such as power line interference, is measured both before and after each of the light emitter wavelengths and the average of the ambient light is then subtracted from the detected signal. and a water content of less than 50 percent, predefined first synthetically produced nucleic acids, and a nucleic acid-complexing, organic auxiliary agent as components.