The current price is cheaper than the original price (1/10) refers to how much the current price is less than the original price.
现价比原价便宜(1/10)是指现价比原价少的占原价的多少
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<result>1/10 = around 0.1</result>