Calculator Experimental Calculator FOO M+ FOO MR FOO MC FOO CE FOO log FOO ln FOO ( FOO ) FOO sin FOO cos FOO tan FOO % FOO +/- FOO 3 FOO 6 FOO = FOO 0 FOO - FOO x FOO 4 FOO 8 FOO / FOO + FOO 1 FOO . FOO 5 FOO 7 FOO 9 FOO 2 FOO CalculatorImpl Standard FOO Calculator FOO