97+13662:27+36944-43*809=
4080-(352719-57837):98+307*107=
215*(368-274)+68*(127+128)=
1) 97+506+36944+34787 = 2760
2)4080-294882: 98+307*107 =4080- 3009+32849 = 33920
3)20210+17340 =37550