Xiaogang's mother went to the supermarket and bought 2 kilograms of chocolate and 3 kilograms of biscuits, and paid 103.60 yuan, 10.80 yuan per kilogram of biscuits, how much per kilogram of chocolate?
小刚的妈妈到超市买了2千克巧克力和3千克饼干，付了103.60元，每千克饼干10.80元，每千克巧克力多少元？
<gadget id="calculator">10.8 * 3</gadget>
<output>32.4</output>

<gadget id="calculator">103.6 - 32.4</gadget>
<output>71.2</output>

<gadget id="calculator">71.2 / 2</gadget>
<output>35.6</output>

<result>35.6</result>