The ratio of Huafeng Farm’s vegetable experimental field to cotton experimental field is 5:4. The cotton experimental field has 8 hectares. The area of these two experimental fields accounts for 36% of the total area. What percentage of the total area is the cotton experimental field?
华丰农场蔬菜试验田和棉花试验田的比是5：4，棉花试验田有8公顷，这两种试验田的面积占总面积的36%，棉花试验田占总面积的百分之几？
<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">4 / 9</gadget>
<output>4/9 = around 0.444444</output>

<gadget id="calculator">8 / (4/9)</gadget>
<output>18</output>

<gadget id="calculator">36 / 100</gadget>
<output>9/25 = around 0.36</output>

<gadget id="calculator">18 / (9/25)</gadget>
<output>50</output>

<gadget id="calculator">8 / 50</gadget>
<output>4/25 = around 0.16</output>

<result>4/25 = around 0.16</result>