A section of cuboid steel with a length of 25 decimeters has a cross-section of 0.64 decimeters square. If there are 7.8 kilograms per cubic decimeter, how many kilograms does this section of steel weigh in total?
一段长25分米的长方体钢材，横截面是0.64平方分米．如果每立方分米中7.8千克，这段钢材共重多少千克？
<gadget id="calculator">0.64 * 25 * 7.8</gadget>
<output>124.8</output>

<result>124.8</result>