16 students lined up in a horizontal line, counting from the left, Xiao Hua is the 12th; counting from the right, Xiao Cong is the 11th. How many classmates are there between Xiao Hua and Xiao Cong?
16个同学排成一列横队，从左边数起，小华是第12个；从右边数起，小聪是第11个．小华与小聪之间隔多少个同学．
<gadget id="calculator">11 - 16 - 2</gadget>
<output>-7</output>

<gadget id="calculator">12 + (-7)</gadget>
<output>5</output>

<result>5</result>