Xiao Ming's home is 460 meters away from the school. Xiao Ming went from home to school this morning, halfway through the journey, he realized that he forgot to bring his Chinese documents. So he hurried home to get the book, and then went to school. About how many meters did Xiao Ming walk to school this morning?
小明家离学校460米．小明今早从家去学校，走到总路程的一半时，发现忘记带语文书了．于是他急急忙忙回家拿书，再去学校．今天早晨，小明上学大约一共走了多少米？
<gadget id="calculator">460 / 2</gadget>
<output>230</output>

<gadget id="calculator">230 * 2</gadget>
<output>460</output>

<gadget id="calculator">460 + 460</gadget>
<output>920</output>

<result>920</result>