There is a 90-meter-long path from Wang Lin’s home to the highway. Wang Lin wants to plant poplar trees every 15 meters on one side of the path (both ends are planted). How many poplar trees will he plant in total?
从王林家到公路有一条长90米的小路，王林要在小路的一侧每隔15米种一棵白杨树，(两端都种)，一共要种多少棵白杨树？
<gadget id="calculator">90 / 15</gadget>
<output>6</output>

<gadget id="calculator">6 + 1</gadget>
<output>7</output>

<result>7</result>