cylindrical steel is 2 meters long. After it is cut into 3 sections on average, the surface area increases by 36 square centimeters, and the steel weighs 7.8 grams per cubic centimeter. Find the weight of the original steel.
一根圆柱形钢材长2米，将它平均截成3段后，表面积增加了36平方厘米，每立方厘米的钢重7.8克，求原钢材的重量．
<gadget id="calculator">36 / 4</gadget>
<output>9</output>

<gadget id="calculator">2 * 100</gadget>
<output>200</output>

<gadget id="calculator">9 * 200 * 7.8</gadget>
<output>14_040</output>

<result>14_040</result>