3 kg of apples costs 25.5 yuan, how much does 5 kg of apples cost.
3千克苹果要25.5元，5千克苹果要多少元．
<gadget id="calculator">25.5 / 3</gadget>
<output>8.5</output>

<gadget id="calculator">8.5 * 5</gadget>
<output>42.5</output>

<result>42.5</result>