The grain warehouse shipped 4.5 tons of rice, and the amount of flour shipped was twice that of rice. How many tons of rice and flour were shipped in total from the warehouse?
粮食仓库运来4.5吨大米，运来的面粉是大米的2倍，仓库共运来大米和面粉多少吨？
<gadget id="calculator">4.5 * 2</gadget>
<output>9</output>

<gadget id="calculator">9 + 4.5</gadget>
<output>13.5</output>

<result>13.5</result>