The difference between A and B is 79.2. After the decimal point of A is moved to the left, it is exactly equal to B. What is A?
甲乙两数之差是79.2，甲数的小数点向左移动一位后，正好和乙数相等，甲数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">79.2 / 9</gadget>
<output>8.8</output>

<gadget id="calculator">8.8 * 10</gadget>
<output>88</output>

<result>88</result>