28,14/ 3,5 - ( 2 * 1/2 * 0,24 - 15/29 )*( 5,45 + 1* 4/45 - 6 * 1/18)
1407/50/7/2 - ( 6/25 - 15/29)*(109/20 + 4/45 - 1/3)
201/25 - ( - 201/725 )* 937/180
201/25 + 201/725 * 937/180
201/25 + 67/725 * 937/60
201/25 + 62779/43500
412519/43500
9 21019/43500