The original price of a commodity is 6.9 yuan, and the current price is 4.83 yuan. How much will the price be reduced?
一种商品原价6.9元，现价4.83元，降价多少．
<gadget id="calculator">6.9 - 4.83</gadget>
<output>2.07</output>

<gadget id="calculator">2.07 / 6.9</gadget>
<output>0.3</output>

<result>0.3</result>