The difference between the two numbers of A and B is 10.8. If the decimal point of A is moved one place to the right, it is equal to the number of B. What is the number of A?
甲乙两数的差是10.8，甲数的小数点向右移动一位就等于乙数，甲数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

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

<result>1.2</result>