14 students stand in a team and do exercises. Zhang Bing is the sixth one from the front, and which one is he from the back?
14个同学站成一队做操，从前面数张兵是第6个，从后数他是第几个？
<gadget id="calculator">14 - 6</gadget>
<output>8</output>

<gadget id="calculator">8 + 1</gadget>
<output>9</output>

<result>9</result>