The school playground is 80 meters long, and Mr. Li has to run 9 round trips every day. How many meters does he run every day?
学校操场长80米，李老师每天都要跑9个来回，他每天要跑多少米？
<gadget id="calculator">9 * 2 * 80</gadget>
<output>1_440</output>

<result>1_440</result>