1,000 first-year students from our school participated in the entrance ceremony of the sports meeting last year. There are 4 people in a row, each row is 2 meters apart, and the rostrum is 22 meters long. How long does it take for them to pass the rostrum at a speed of 40 meters per minute?
我校去年初一年级的1000名学生参加运动会入队仪式，每4人一行，前后每行间隔2米，主席台长22米，他们以每分钟40米的速度通过主席台，需要多少分钟．
<gadget id="calculator">1_000 / 4</gadget>
<output>250</output>

<gadget id="calculator">250 - 1</gadget>
<output>249</output>

<gadget id="calculator">249 * 2</gadget>
<output>498</output>

<gadget id="calculator">498 + 22</gadget>
<output>520</output>

<gadget id="calculator">520 / 40</gadget>
<output>13</output>

<result>13</result>