The playground designed by Yang Ming (scale 1:1000) has 6 tracks, each track is 0.1 cm wide on the drawings, the diameter of the innermost semicircular track is 3.4 cm, and the straight track is 5 cm long. How many cubic meters of sand are needed to cover the track with a thickness of 15 cm?
杨明设计的运动场(比例尺1：1000)有6个跑道，在图纸上每条跑道宽0.1厘米，最里侧半圆跑道的直径为3.4厘米，直跑道长5厘米．如果要给这个运动场的跑道铺上15厘米厚的沙子，需要沙子多少立方米？
<gadget id="calculator">1 / 1_000</gadget>
<output>1/1_000 = around 0.001</output>

<gadget id="calculator">0.1 / (1/1_000) / 100 / 1_000</gadget>
<output>0.001</output>

<gadget id="calculator">3.4 / 0.001 / 100 / 2</gadget>
<output>17</output>

<gadget id="calculator">0.1 / (1/1_000) / 100</gadget>
<output>1</output>

<gadget id="calculator">1 * 6</gadget>
<output>6</output>

<gadget id="calculator">17 + 6</gadget>
<output>23</output>

<gadget id="calculator">23 ** 2</gadget>
<output>529</output>

<gadget id="calculator">17 ** 2</gadget>
<output>289</output>

<gadget id="calculator">529 - 289</gadget>
<output>240</output>

<gadget id="calculator">3.14 * 240</gadget>
<output>753.6</output>

<gadget id="calculator">5 / 0.001 / 100</gadget>
<output>50</output>

<gadget id="calculator">1 * 6 * 2</gadget>
<output>12</output>

<gadget id="calculator">50 * 12</gadget>
<output>600</output>

<gadget id="calculator">753.6 + 600</gadget>
<output>1_353.6</output>

<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">1_353.6 * (3/20)</gadget>
<output>203.04</output>

<result>203.04</result>