The chemical fertilizer factory produced 300 tons of chemical fertilizers in September, exceeding the plan by 20%. How many tons are planned to be produced in September?
化肥厂9月份生产化肥300吨，超过计划20%，9月份计划生产多少吨．
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">300 / (6/5)</gadget>
<output>250</output>

<result>250</result>