After the decimal point of a decimal is moved to the right, the sum of the original number is 53.79. What is the original number?
一个小数的小数点向右移动一位后，与原来的数的和是53.79，那么原数是多少．
<gadget id="calculator">10 + 1</gadget>
<output>11</output>

<gadget id="calculator">53.79 / 11</gadget>
<output>4.89</output>

<result>4.89</result>