Xiaohua, Xiaojun, and Xiaogang bought a basket of apples together with the same amount of money. When sharing the apples, Xiaohua and Xiaojun both weighed 9 kilograms more than Xiaogang. Therefore, each person had to give Xiaogang 6 yuan. Q: How much is an apple per kilogram?
小华、小军、小刚三人拿同样多的钱合买了一筐苹果，分苹果时，小华和小军都比小刚多9千克，因此，每人要给小刚6元．问：每千克苹果多少元？
<gadget id="calculator">2 / 3 / 2</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">9 * (1/3)</gadget>
<output>3</output>

<gadget id="calculator">6 / 3</gadget>
<output>2</output>

<result>2</result>