Xiaoxin's home is 1.2 kilometers away from the school. After walking 0.35 kilometers, he went home to pick up a book. How much more kilometers would he have to walk to school than usual?
小新家距学校1.2千米，他走了0.35千米后又回家取了一本书，这样他比平时去学校要多走多少千米？
<gadget id="calculator">0.35 * 2</gadget>
<output>0.7</output>

<result>0.7</result>