A steel factory produced 60 tons of steel in May, 20% more than in April. How many tons of steel were produced in April? (solution by equation)
某钢厂五月份生产60吨钢材，比四月份多生产20%，四月份生产多少吨钢材？(用方程解)
<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">60 / (6/5)</gadget>
<output>50</output>

<result>50</result>