Yongan Town planted 24 hectares of forests this year, 20% more than last year. How many hectares were planted last year?
永安镇今年造林24公顷，比去年造林多20%，去年造林多少公顷？
<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">24 / (6/5)</gadget>
<output>20</output>

<result>20</result>