1. Calculate: $(20.15+40.3) \times 33+20.15$
\begin{aligned} \text { [Analysis] Original expression } & =(20.15+20.15 \times 2) \times 33+20.15 \\ & =20.15 \times 3 \times 33+20.15 \\ & =20.15 \times(3 \times 33+1) \\ & =2015\end{aligned}