After a cylindrical steel with a length of 6 decimeters is cut into two small cylinders, the surface area increases by 20 square centimeters compared to the original one, and the steel weighs 7.8 grams per cubic centimeter. How many grams does the two steel sections weigh in total?
将一个长6分米的圆柱形钢材，切割成2节小圆柱体后，表面积比原来增加20平方厘米，每立方厘米钢材重7.8克，这两节钢材共重多少克？
<gadget id="calculator">20 / 2</gadget>
<output>10</output>

<gadget id="calculator">6 * 10</gadget>
<output>60</output>

<gadget id="calculator">10 * 60 * 7.8</gadget>
<output>4_680</output>

<result>4_680</result>