There is a square flower bed with a side length of 10 meters, and 4 pine trees are planted on the four corners. If a pine tree is placed every 2 meters, how many trees are there in total?
有一个正方形花坛，边长是10米，在四个角上栽了4棵松树，如果每隔2米载一棵松树，问一共载多少棵？
<gadget id="calculator">4 / 2</gadget>
<output>2</output>

<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<result>20</result>