There is a section of the road that needs to be repaired. Workers arranged some conical roadblocks in a row, a total of 10, the diameter of the bottom of each cone is 20 cm, and the distance between the bottom of every two cones is 1.5 meters, from the first cone to the last. long?
有一段公路需要维修．工人将一些圆锥形路障排成一排，一共摆了10个，每个圆锥底面直径是20厘米，每两个圆锥底面间的距离是1.5米，从第一个圆锥到最后一个共排了多长？
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">9 * 1.5</gadget>
<output>13.5</output>

<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) * 10</gadget>
<output>2</output>

<gadget id="calculator">13.5 + 2</gadget>
<output>15.5</output>

<result>15.5</result>