A cuboid of steel is 5 meters long, 2 meters wide, and 1.5 meters high. A cubic meter of steel weighs 2000 kilograms. How many tons does this piece of steel weigh?
一个长方体的钢材，长5米，宽2米，高1.5米．每立方米的钢材重2000千克．这根钢材重多少吨？
<gadget id="calculator">2_000 / 1_000</gadget>
<output>2</output>

<gadget id="calculator">5 * 2 * 1.5 * 2</gadget>
<output>30</output>

<result>30</result>