\[\begin{cases}\text{Row A}:\ \ 1,2,3...9\\
\text{Row B}:\ \ 2,3,4...10\\
\text{Row C}:\ \ 3,4,5...11\\
.\\.\\.\\.\\
\text{Row I}:\ \ 9,10,11...17\\
\text{Row J}:\ \ 10,11,12...18\end{cases}\].Find the sum of all the numbers in all the rows.

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