After a 5 decimeter long round steel is cut into 4 sections, the total surface area increases by 113.04 square decimeters compared to the original one. If the steel weighs 7.8 kilograms per cubic decimeter, how much does this round steel weigh?
将一根长5分米的圆钢截成4段后，其表面积总和比原来增加了113.04平方分米，如果每立方分米的钢重7.8千克，这根圆钢重多少千克？
<gadget id="calculator">113.04 / 6</gadget>
<output>18.84</output>

<gadget id="calculator">18.84 * 5</gadget>
<output>94.2</output>

<gadget id="calculator">7.8 * 94.2</gadget>
<output>734.76</output>

<result>734.76</result>