The school held a sports meeting, and there were a total of 2005 students participating in the guard of honor at the entrance ceremony. Every 5 people lined up in a row, and each row had 2 meters of space. If the guard of honor passes the rostrum at a speed of 20 meters per minute, how many minutes will it take?
学校举行运动会，参加入场式的仪仗队的同学共有2005人，每5人排一行，每一行空2米．如果这个仪仗队以每分钟20米的速度通过主席台，需要多少分钟．
<gadget id="calculator">205 / 5</gadget>
<output>41</output>

<gadget id="calculator">41 - 1</gadget>
<output>40</output>

<gadget id="calculator">2 / 20</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">40 * (1/10)</gadget>
<output>4</output>

<result>4</result>