Xiaodong’s house is 750 meters away from school. If Xiaodong goes home for lunch, how many meters does he have to walk to and from school every day?
小东家到学校有750米，如果小东中午回家吃饭，他每天上学和放学要走多少米？
<gadget id="calculator">750 * 4</gadget>
<output>3_000</output>

<result>3_000</result>