A number, if its decimal part is expanded by 6 times and the integer part is added, it is 10.8. If its decimal part is expanded by 9 times and the integer part is added, it is 13.2. What is this number?
一个数，如果把它的小数部分扩大6倍再加上整数部分就是10.8．如果把它的小数部分扩大9倍再加上整数部分，就是13.2．这个数是多少？
<gadget id="calculator">32.4 / 3</gadget>
<output>10.8</output>

<gadget id="calculator">13.2 - 10.8</gadget>
<output>2.4</output>

<gadget id="calculator">9 - 6</gadget>
<output>3</output>

<gadget id="calculator">2.4 / 3</gadget>
<output>0.8</output>

<gadget id="calculator">0.8 * 6</gadget>
<output>4.8</output>

<gadget id="calculator">10.8 - 4.8</gadget>
<output>6</output>

<gadget id="calculator">6 + 0.8</gadget>
<output>6.8</output>

<result>6.8</result>