There is a row of children on the playground. From the left, count Xiaoyu 5 and from the right, count Xiaoyu 8. How many children are there in this row?
操场上有一排小朋友，从左起报数小雨报5，从右起报数小雨报8，这一排一共有多少个小朋友？
<gadget id="calculator">8 - 1</gadget>
<output>7</output>

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

<result>12</result>