16 children are lined up, Xiao Ming is the 8th from left to right, so which number is Xiao Ming from right to left?
16名小朋友排成一队，小明在从左往右数第8个，那么从右往左数小明是第几个？
<gadget id="calculator">16 - 8</gadget>
<output>8</output>

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

<result>9</result>