The school playground is 70 meters long and 40 meters wide. If each student occupies an area of 2 square meters when doing exercises, how many students can stand on the playground?
学校操场长70米，宽40米，如果做操时每个同学占地2平方米，这操场可以站多少个同学？
<gadget id="calculator">40 / 2</gadget>
<output>20</output>

<gadget id="calculator">70 * 20</gadget>
<output>1_400</output>

<result>1_400</result>