The chemical fertilizer factory produced 240 tons of chemical fertilizers in the second quarter of this year, which was (1/5) less than in the first quarter. How many tons of fertilizer was produced in the first quarter?
化肥厂今年第二季度生产化肥240t，比第一季度减少(1/5)．第一季度生产化肥多少吨？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">240 / (4/5)</gadget>
<output>300</output>

<result>300</result>