Xiao Ming and Xiao Hua bought the same pencil, Xiao Ming bought 21, Xiao Hua bought 35, Xiao Hua spent 14 yuan more than Xiao Ming. What is the unit price of a pencil?
小明和小华买同样的铅笔，小明买了21支，小华买了35支，小华比小明多用了14元．铅笔的单价是多少元/支．
<gadget id="calculator">35 - 21</gadget>
<output>14</output>

<gadget id="calculator">14 / 14</gadget>
<output>1</output>

<result>1</result>