A cylindrical steel, cut off 1 meter. The measured diameter of its cross-section is 20 centimeters, and the cut volume accounts for (2/3) of this steel. How many cubic decimeters was the original volume of this steel?
一根圆柱形钢材，截下1米．量的它的横截面的直径是20厘米，截下的体积占这根钢材的(2/3)，这根钢材原来的体积是多少立方分米？
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">2 / 3</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">100 / (2/3) / 1_000</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">3.14 * 100 * 1 * (3/20)</gadget>
<output>47.1</output>

<result>47.1</result>