A commodity is sold after the cost price is increased by 30%. Later, due to seasonal reasons, it was sold at a 20% discount, and the price was 104 yuan. Is it a loss or a profit if I sell one of this commodity now? How much do you lose or earn?
一件商品按成本价提高30%后出售．后因季节原因，又打八折出售，售价为104元．现在这种商品卖出一件是赔还是赚？赔或赚多少元？
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">104 / (4/5)</gadget>
<output>130</output>

<gadget id="calculator">30 / 100</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">1 + (3/10)</gadget>
<output>13/10 = around 1.3</output>

<gadget id="calculator">130 / (13/10)</gadget>
<output>100</output>

<gadget id="calculator">104 - 100</gadget>
<output>4</output>

<result>4</result>