If the decimal point of the decimal is moved one place to the right, the original number is increased by 10.8, what is the original number?
把小数的小数点向右移一位后，比原数增加了10.8，则原数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">10.8 / 9</gadget>
<output>1.2</output>

<result>1.2</result>