The grain warehouse shipped 6 carts of rice, each containing 4.5 tons of rice; and 8 carts of flour, each containing 3.7 tons of flour. What math problem can you ask? And answer it.
粮食仓库运来6车大米，每车装大米4.5吨；又运来8车面粉，每车装了面粉3.7吨．你能提出一个什么数学问题？并解答出来．
<gadget id="calculator">4.5 * 6</gadget>
<output>27</output>

<gadget id="calculator">3.7 * 8</gadget>
<output>29.6</output>

<gadget id="calculator">27 + 29.6</gadget>
<output>56.6</output>

<result>56.6</result>