For a piece of clothing, after the price is increased (1/8) and then reduced (1/8), will the price change? If so, what fraction of the original price is the current price?
一件衣服，先提价(1/8)再降价(1/8)后，价格会变吗？若会变，现价是原价的几分之几？
<gadget id="calculator">1 / 8</gadget>
<output>1/8 = around 0.125</output>

<gadget id="calculator">1 + (1/8)</gadget>
<output>9/8 = around 1.125</output>

<gadget id="calculator">1 - (1/8)</gadget>
<output>7/8 = around 0.875</output>

<gadget id="calculator">(9/8) * (7/8)</gadget>
<output>63/64 = around 0.984375</output>

<result>63/64 = around 0.984375</result>