In the philately, Li Dan collected 110 stamps, and Li Yu collected 20% less stamps than Li Dan. How many stamps does Li Yu collect?
在集邮活动中，李丹收集了110张，李玉比李丹少收集20%．李玉收集邮票多少张？
<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">110 * (4/5)</gadget>
<output>88</output>

<result>88</result>