The school playground is 400 meters a week, and a colorful flag is inserted every 10 meters. How many colored flags are there in total?
学校操场一周400米，每隔10米插一面彩旗，一共要多少面彩旗？
<gadget id="calculator">400 / 10</gadget>
<output>40</output>

<result>40</result>