During the physical education class, students line up to count, from left to right, Xiao Ming reported 12; from right to left, Xiao Ming reported 14, how many students lined up?
体育课时学生列队报数，从左至右，小明报12；从右至左，小明报14，列队学生共有多少人？
<gadget id="calculator">14 - 1</gadget>
<output>13</output>

<gadget id="calculator">12 + 13</gadget>
<output>25</output>

<result>25</result>