2 water pumps irrigate 1.2 tons of ground in 3 hours, how many tons of water is watered by 1 water machine per hour.
2台抽水机3小时浇地1.2吨，1台抽水机每小时浇水多少吨．
<gadget id="calculator">1.2 / 2 / 3</gadget>
<output>0.2</output>

<result>0.2</result>