100 520 - 470 *50 + 13 980=
14 110 + 801 000 : 900 - 7604=
734 600 :50 + 454 * 40 =
(560-12 240 :30 ) + 145 =

100520-470×50+13980=91000
14110+801000:900-7604=7396
734600:50+454×40=14703 (35ост)
(560-12240:30)+145=297