A piece of rectangular parallelepiped steel is 1.6 meters long and its cross-section is a square with a side length of 8 decimeters. A cubic decimeter of steel weighs 7.8 kilograms. How many kilograms does this piece of square steel weigh?
一段长方体钢材，长1.6米，横截面是边长8分米的正方形．每立方分米钢重7.8千克，这块方钢重多少千克？
<gadget id="calculator">1.6 * 10</gadget>
<output>16</output>

<gadget id="calculator">8 * 8 * 16 * 7.8</gadget>
<output>7_987.2</output>

<result>7_987.2</result>