Mechanical Operation
Mathematical operation - addition \( \;(+),\; \) subtraction \(\;(-),\; \) multiplication \( \;(\times),\; \) division \( \;(+)\; \)
Mathematical operation - addition \( \;(+),\; \) subtraction \(\;(-),\; \) multiplication \( \;(\times),\; \) division \( \;(+)\; \)