There are a pile of square steel with the same specifications on the construction site, a total of 10 pieces. The cross-section of each square steel is a square with a side length of 9 cm, and the length is 60 decimeters. If the weight of steel per cubic decimeter is 8.9 kg, how many kilograms does this pile of square steel weigh?
建筑工地上有一堆规格相同的方钢，共10根．每根方钢的横截面是边长9cm的正方形，长是60分米，若每立方分米钢重8.9kg，这堆方钢重多少千克？
<gadget id="calculator">9 / 10</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(9/10) * (9/10) * 60 * 8.9 * 10</gadget>
<output>4_325.4</output>

<result>4_325.4</result>