A triangular wheat experimental field at the Agricultural Science Station has a bottom length of 70 meters and a height of 40 meters. The harvested wheat this year is 2047.5 kg. How many kilograms of wheat are produced on average per square meter?
农科站的一块三角形小麦试验田，底长70米，高40米，今年收小麦2047.5千克．平均每平方米产小麦多少千克？
<gadget id="calculator">280 / 2</gadget>
<output>140</output>

<gadget id="calculator">2_047.5 / 140</gadget>
<output>14.625</output>

<result>14.625</result>