The original price of a bicycle is 400 yuan, the current price is 320 yuan, how much less is the current price than the original price
一辆自行车的原价是400元，现价是320元，现价比原价少多少
<gadget id="calculator">400 - 320</gadget>
<output>80</output>

<gadget id="calculator">80 / 400</gadget>
<output>1/5 = around 0.2</output>

<result>1/5 = around 0.2</result>