Plant sweet potatoes in a rectangular field with an area of 450 square meters, plant one plant in an average of 15 square decimeters, and harvest an average of 2.5 kg of sweet potatoes per plant. How many kilograms of sweet potatoes are harvested in this field?
在一块面积是450平方米的长方形地里栽甘薯，平均15平方分米种一株，平均每株收甘薯2.5千克．这块地共收甘薯多少千克？
<gadget id="calculator">450 / 0.15</gadget>
<output>3_000</output>

<gadget id="calculator">3_000 * 2.5</gadget>
<output>7_500</output>

<result>7_500</result>