Evaluate and simplify $\frac{4}{19}+\frac{9}{19}+\frac{2}{19}$419+919+219.
Evaluate and simplify $\frac{3}{17}+\frac{6}{17}-\frac{4}{17}$317+617−417.
Evaluate and simplify $\frac{3}{40}+\frac{4}{5}\times\frac{7}{8}$340+45×78.
Evaluate and simplify $\left(\frac{3}{7}+\frac{2}{7}\right)\times\frac{5}{9}$(37+27)×59.