After sawing a 5-meter-long cylindrical steel into 3 sections, the surface area increases by 60 square centimeters, what is the volume of the original steel?
把一根长5米的圆柱体形钢材锯成3段后，表面积增加了60平方厘米，则原钢材体积为多少．
<gadget id="calculator">60 / 4</gadget>
<output>15</output>

<gadget id="calculator">5 * 100</gadget>
<output>500</output>

<gadget id="calculator">15 * 500</gadget>
<output>7_500</output>

<result>7_500</result>