calc calc 0 0 237 159 JS Calculator unnamed display 18 layout2 unnamed plus + all_clear AC minus - equals = clear CL zero 0 four 4 two 2 five 5 three 3 seven 7 six 6 eight 8 nine 9 one 1 plus clicked() calc plus() minus clicked() calc minus() equals clicked() calc equals() zero clicked() calc zero() four clicked() calc four() two clicked() calc two() five clicked() calc five() three clicked() calc three() seven clicked() calc seven() six clicked() calc six() eight clicked() calc eight() nine clicked() calc nine() one clicked() calc one() one() two() three() four() five() six() seven() eight() nine() zero() plus() minus() equals()