A piece of steel with a side length of 6 decimeters is melted into a rectangular steel with a cross section of 90 square decimeters. What is the length of the melted rectangular parallelepiped?
一块棱长是6分米的正方体的钢材，溶化成横截面是90平方分米的长方体钢材，溶化成的长方体钢材长是多少分米？
<gadget id="calculator">6 / 90</gadget>
<output>1/15 = around 0.066667</output>

<gadget id="calculator">6 * 6 * (1/15)</gadget>
<output>12/5 = around 2.4</output>

<result>12/5 = around 2.4</result>