The noodles are 6.35 yuan per kilogram, how much is the price for buying 2.5 kilograms of noodles.
面条每千克6.35元，买2.5千克面条应付多少元．
<gadget id="calculator">6.35 * 2.5</gadget>
<output>15.875</output>

<result>15.875</result>