Move the decimal point of a decimal number two places to the left and then three places to the right. The result is 25.3. What is the original number?
把一个小数的小数点先向左移动两位，再向右移动三位，结果是25.3，原数是多少．
<gadget id="calculator">25.3 / 10</gadget>
<output>2.53</output>

<result>2.53</result>