All the students in the third grade lined up in a square team, counting from left to right and from right to left, and Xiao Ming was in the 8th place. How many students are there in the third grade?
三年级所有同学排成一个方队，从左往右数和从右往左数，小明都在第8个．三年级一共有多少同学？
<gadget id="calculator">7 + 7 + 1</gadget>
<output>15</output>

<gadget id="calculator">15 * 15</gadget>
<output>225</output>

<result>225</result>