\[\boxed{\mathbf{2.544}}\]
\[1)\ 13,5\ :0,45 = 1350\ :45 =\]
\[= 30{^\circ} - угол\ \text{DBC.}\]
\[2)\ \angle ABD = \angle ABC + \angle DBC =\]
\[= 13,5{^\circ} + 30{^\circ} = 43,5{^\circ} -\]
\[угол\ \text{ABD.}\]
\[Ответ:30{^\circ}\ и\ 43,5{^\circ}.\]