Xiaohua and Xiaoming collected 80 plant specimens and insect specimens, 65% of which were plant specimens. How many insect specimens were there?
小华、小明采集植物标本和昆虫标本80件，65%是植物标本，昆虫标本有多少件？
<gadget id="calculator">65 / 100</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">1 - (13/20)</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">80 * (7/20)</gadget>
<output>28</output>

<result>28</result>