Brother and sister collect stamps, the younger brother has 80 stamps, the older sister said: Give me your (1/8), we will have the same amount of stamps. How many stamps did my sister originally collect?
姐弟俩集邮，弟弟有80枚邮票，姐姐说：把你的(1/8)给我，我们的邮票就同样多了．姐姐原来集邮多少枚？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 - (1/8) - (1/8)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">80 * (3/4)</gadget>
<output>60</output>

<result>60</result>