30 kg of apples, 50 kg of peaches. What percentage are apples less than peaches? How much is the following formula correct?
苹果30千克，桃子50千克．苹果比桃子少百分之几？下面列式对的是多少
<gadget id="calculator">50 - 30</gadget>
<output>20</output>

<gadget id="calculator">20 / 50</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>