A steel factory produces a cuboid steel with a length of 3.5m, a width and a thickness of 6dm, and a steel weight of 7.8t per cubic meter. How much does this steel weigh?
一个钢铁厂生产一种长方体钢材，长3.5m，宽和厚都是6dm，每立方米钢重7.8t，这根钢材重多少t？
<gadget id="calculator">6 / 10</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">3.5 * (3/5) * (3/5) * 7.8</gadget>
<output>9.828</output>

<result>9.828</result>