Simplify: \((1÷2/9)+(1÷3 1/5)+(1÷2 2/3)\).
5.1875
1 ÷ (2/9) = 4.5; 1 ÷ (16/5)=0.3125; 1 ÷ (8/3)=0.375. Sum=5.1875.