Wang Lin walked 750 meters from home to school. He went to and from school twice a day. How many meters did he walk every day?
王林从家到学校共750米，他每天上学往返2次，每天走了多少米？
<gadget id="calculator">2 * 2</gadget>
<output>4</output>

<gadget id="calculator">750 * 4</gadget>
<output>3_000</output>

<result>3_000</result>