A triangular piece of land has a base of 350 meters and a height of 240 meters. Last year, a total of 18.9 tons of wheat was harvested. How many tons of wheat was harvested per hectare on average?
一块三角形土地，底350米，高240米，去年共收小麦18.9吨，平均每公顷收小麦多少吨？
<gadget id="calculator">240 / 2 / 10_000</gadget>
<output>3/250 = around 0.012</output>

<gadget id="calculator">350 * (3/250)</gadget>
<output>21/5 = around 4.2</output>

<gadget id="calculator">18.9 / (21/5)</gadget>
<output>4.5</output>

<result>4.5</result>