Aunt Wang bought 3 kilograms of oranges and spent 4 yuan; Aunt Li wanted to buy 9 kilograms of the same oranges, how much should she pay.
王阿姨买了3千克桔子，花了4元钱；李阿姨要买9千克同样的桔子，应付多少元．
<gadget id="calculator">4 / 3</gadget>
<output>4/3 = around 1.333333</output>

<gadget id="calculator">(4/3) * 9</gadget>
<output>12</output>

<result>12</result>