Two seeders can sow 4.2 hectares in 3 hours, so how many hectares can one seeder sow on average per hour?
两台播种机3小时能播种4.2公顷，那么一台播种机平均每小时能播种多少公顷？
<gadget id="calculator">4.2 / 2 / 3</gadget>
<output>0.7</output>

<result>0.7</result>