Zhangwu Village actually planted 8 hectares of ginger this year, 20% less than the original plan. How many hectares of ginger were originally planned?
张屋村今年实际种生姜8公顷，比原计划少种20%，原计划种姜多少公顷？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

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

<gadget id="calculator">8 / (4/5)</gadget>
<output>10</output>

<result>10</result>