There is 750 kg of rice in the cafeteria, and 350 kg of rice is used in 7 days. According to this calculation, how many days can the rest be eaten?
食堂有750千克大米，7天用掉350千克．照这样计算，剩下的还可以吃几天？
<gadget id="calculator">750 - 350</gadget>
<output>400</output>

<gadget id="calculator">350 / 7</gadget>
<output>50</output>

<gadget id="calculator">400 / 50</gadget>
<output>8</output>

<result>8</result>