A student observed 31 Quisqualis plants each with 36 nodes, 15 Hibiscus plants each with 21 nodes and 77 Calotropis plants each with 11 nodes. All these plants contains leaves at every node. What will be the total number of leaves of these three plants put together?

Question

$\begin {array} {1 1} (1)\;2593 & \quad (2)\;1585 \\ (3)\;237 & \quad (4)\;4241 \end {array}$