Everything is Parallel

Let $PQSR$ be a parallelogram graphed on a coordinate plane where $\overline{PQ}$ is parallel to $\overline{RS}$ . If the coordinates of $P$ are $(0,0)$ , the coordinates of $Q$ are $(3,2)$ , and the coordinates of $S$ are $(4,6)$ , find the coordinates of $R$ .

If the coordinates are $(x,y)$ , then enter $x+y$ as your answer.