A ball is 36 yuan. You can buy 2 footballs for the price of 6 balls. How much is a football?
一个皮球36元，买6个皮球的钱可以买2个足球，一个足球多少元？
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">36 * 3</gadget>
<output>108</output>

<result>108</result>