Harry Bobo and Harry Niuniu each have 80 stamps, and Harry Bobo gives Harry Niuniu 20. At this time, what percentage of Harry Bobo's stamps is Harry Niuniu's?
哈利波波和哈利妞妞各有邮票80枚，哈利波波给哈利妞妞20枚，这时哈利波波的邮票枚数是哈利妞妞的百分之几？
<gadget id="calculator">80 - 20</gadget>
<output>60</output>

<gadget id="calculator">80 + 20</gadget>
<output>100</output>

<gadget id="calculator">60 / 100</gadget>
<output>3/5 = around 0.6</output>

<result>3/5 = around 0.6</result>