Divide 4 tons of chemical fertilizer into 7 parts, how many tons does each part weigh?
把4吨化肥平均分成7份，每份重多少吨．
<gadget id="calculator">4 / 7</gadget>
<output>4/7 = around 0.571429</output>

<result>4/7 = around 0.571429</result>