(40:4/5-50)17/19+19/17((40/4)5-50)17/19+19/17(105-50)17/19+19/17(50-50)17/19 +19/170 * 17/19 +19/170 + 1.11761.1176
(40:4/5-50)17/19+19/17
((40/4)5-50)17/19+19/17
(105-50)17/19+19/17
(50-50)17/19 +19/17
0 * 17/19 +19/17
0 + 1.1176
1.1176