The distance between the entrance of the experimental primary school and the teaching building is 36 meters. On the day of the parent meeting, the school will place colored flags on both sides of the road between the school gate and the teaching building, with one every 4 meters. How many colored flags will be planted in total?
实验小学门口到教学楼之间的距离是36米．家长会那天，学校要在校门口到教学楼之间的道路两侧插彩旗，每隔4米插一面，一共要插多少面彩旗？
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

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

<gadget id="calculator">8 * 2</gadget>
<output>16</output>

<result>16</result>