(2 4/15-1 5/12) : 3 2/5 + 6 4/9 : 2=?

[latex](2 \frac{4}{15} -1 \frac{5}{12} ):3 \frac{2}{5} +6 \frac{4}{9} :2=(1 \frac{16}{60} - \frac{25}{60} ): \frac{17}{5} + \frac{40}{9} * \frac{1}{2} = \frac{51}{60} * \frac{5}{17} + \frac{20}{9} = [/latex][latex] \frac{1}{4}+ \frac{20}{9} = \frac{9}{36} + \frac{80}{36} = \frac{89}{36}=2 \frac{17}{36} [/latex]