A piece of steel with a mass of 156 grams is cast into a conical part with a base area of 12 square centimeters, and the mass of this steel is 7.8 grams per cubic centimeter. What is the height of this conical part in centimeters?
将一块质量为156克的钢材铸造成一个底面积是12平方厘米的圆锥形零件，这种钢材每立方厘米的质量为7.8克．这个圆锥形零件的高是多少厘米？
<gadget id="calculator">156 / 7.8</gadget>
<output>20</output>

<gadget id="calculator">3 / 12</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">20 * (1/4)</gadget>
<output>5</output>

<result>5</result>