Xiao Ming and Xiao Hong buy the same pencil, Xiao Ming bought 7, Xiao Hong bought 4, Xiao Ming spent 1.2 yuan more than Xiao Hong. How much is each pencil?
小明和小红买同样的铅笔，小明买了7支，小红买了4支，小明比小红多花了1.2元．每支铅笔多少元？
<gadget id="calculator">7 - 4</gadget>
<output>3</output>

<gadget id="calculator">1.2 / 3</gadget>
<output>0.4</output>

<result>0.4</result>