The original price of a color TV set is 2600 yuan, but it can be sold in eight parts, which is much cheaper.
一种彩色电视机原价2600元，打八拆出售，可便宜多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">2_600 * (1/5)</gadget>
<output>520</output>

<result>520</result>