12. TBQ - Finding the cowrie shells

A misser gave a beggar \(\frac{2}{5}\) of \(\frac{5}{16}\) of \(\frac{6}{4}\) of \(\frac{8}{2}\) of \(\frac{2}{3}\) of \(\frac{3}{4}\) of a dramma. Here, dramma refers to a silver coin used in \(1150\) \(\text{CE}\). The tale says that \(1\) dramma is equivalent to \(1280\) cowrie shells.  How many cowrie shells were given by the misser to the beggar?

 

 

Number of cowrie shells given by the misser to the beggar =

 

[ NOTE: Give the answer in \(2\) decimal places if needed]