(57*42+58*57-(277*75-237*75))*10=
27000 ________________________
(57*42+58*57-(277*75-237*75))*101)277*75=207752)237*75=17775 3)20775-17775=3000 4)57*42=2394 5)58*57=3306 6)2394+3306=5700 7)5700-3000=2700
В 7: 5700*10=57000