After moving the decimal point of a decimal one place to the right, the number obtained is 61.2 greater than the original number. What is the original number?
把一个小数的小数点向右移动一位后，得到的数比原来的数大61.2，这个数原来是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">61.2 / 9</gadget>
<output>6.8</output>

<result>6.8</result>