The school cafeteria bought 240 kilograms of rice and planned to eat it in 12 days. Actually eat less than 5 kg per day, how many days will you actually eat it? (column equation solution)
学校食堂买来240千克大米，计划12天吃完．实际每天少吃5千克，实际多少天吃完？(列方程解答)
<gadget id="calculator">240 / 12</gadget>
<output>20</output>

<gadget id="calculator">20 - 5</gadget>
<output>15</output>

<gadget id="calculator">240 / 15</gadget>
<output>16</output>

<result>16</result>