The school cafeteria purchased 3 tons of rice and planned to eat it for 50 days, but actually ate 10 kg less than planned every day. How many days did I actually eat?
学校食堂购置了3吨大米，计划吃50天，实际每天比计划少吃10千克，实际吃了多少天？
<gadget id="calculator">1_000 / 50</gadget>
<output>20</output>

<gadget id="calculator">3 * 20</gadget>
<output>60</output>

<gadget id="calculator">60 - 10</gadget>
<output>50</output>

<result>60</result>