Chang’an International Hotel shipped some rice, ate it (4/5), and left 2 tons. How many tons of rice did the hotel ship? (column equation solution)
长安国际酒店运来一些大米，吃了(4/5)，还剩下2吨，酒店运来大米多少吨？(列方程解答)
<gadget id="calculator">4 / 5</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2 / (1/5)</gadget>
<output>10</output>

<result>10</result>