The decimal point of a number is moved one place to the right, which is 140.4 larger than the original number. What is the original number?
一个数的小数点向右移动一位，比原来的数大140.4，原来的数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">140.4 / 9</gadget>
<output>15.6</output>

<result>15.6</result>