3d rendering of a ancient suanpan chinese abacus with metal rods and unions, wooden structure and movable beads for

traditional isolated render metallic asia subtraction suan pan hexadecimal system asian calculate computation calculator han dynasty decimal hand numbers educational calculation decimals illustration square root wooden beads antique mental suanpan pieces education division swanpan rods abacus souanpan tool cube mobile parts retro addition chinese numeral arithmetic count ancient china structure multiplication old rendering metal unions movable for different operations mathematical calculations