A rice mill works 5 hours in the morning and 4 hours in the afternoon. If the rice is milled 2.85 tons per hour, how many tons of rice will the rice mill mill in one day?
一台碾米机上午工作5小时，下午工作4小时，如果每小时碾米2.85吨，这台碾米机一天共碾米多少吨？
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">2.85 * 9</gadget>
<output>25.65</output>

<result>25.65</result>