Mom bought 15 meters of white cloth, and the floral cloth she bought was less than the white cloth (1/3). How many meters to buy flower cloth?
妈妈买了白布15米，买的花布比白布少(1/3)．买花布多少米？
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">15 * (2/3)</gadget>
<output>10</output>

<result>10</result>