Felix had $ $1440$. He spent $$\dfrac{3}{7}$$ of it at a restaurant and $$\dfrac{2}{9}$$ of the remainder on his enrichment fees. How much money did he have left? $ $$~\uline{~~~~~~~~~~}~. 
Overseas Competition->Knowledge Point->Word Problem Modules->Solving Problems Involving Fractions and Percentages->Knowing the Base