7;
2 + 3;
3 * 4;
9 - 16;
8 - -18;
14 / 7;
3 + 5 / 2;
15 - 8 - 2;
15 - 8 + 2;
43 / 16 * 12;
23 - 3 - 17 - 9;
23 - 3 - 17 + 9;
23 - 3 + 17 - 9;
23 + 3 - 17 - 9;
23 - 3 * 17 - 9;
15 * 8 + 2;
15 - 8 * 2;
2+*8;
[1,3] + [2,4];
[1,3] / [2,4];
[20,15];
[-20,15];
[20,-15];
[-20,-15];
[6/9, 4];
[1+2, 4] + [5, 6];
[3, 7-4] - [7+2, 16];
[6, 2*5] * [8-3, 3*7];
[3, 7/12];
[7, [8,9]];
[7,4] - [5,8] * [5,8] / [7,4]; [3+5*7,8*(2-5)] / 34;
[3+[4,5], 6];
-[7,5] * ---------[-3,5] + [7, --8--------3];
[3,8] * ([7,4] + 9);
(7 - [3,4]) + [7,8] - [3,5] * [5,8];
[45*3+27*8-(6+98),3*5*4-9-7];