230 + 70 * 3;
(460 + 40) * 2;
(470 − 70) * 2;
380 − 80 * 3;
600 + 180 : 6 + 9;
360 : (120 + 240) * 4.
230 + 70 * 3 = 230 + 210 = 440;
(460 + 40) * 2 = 500 * 2 = 1000;
(470 − 70) * 2 = 400 * 2 = 800;
380 − 80 * 3 = 380 − 240 = 140;
600 + 180 : 6 + 9 = 600 + 30 + 9 = 639;
360 : (120 + 240) * 4 = 360 : 360 * 4 = 1 * 4 = 4.
