For a one-digit decimal, if the decimal point is removed, the new number obtained is 120.6 more than the original number. What is the original one-digit decimal?
一个一位小数，若去掉它的小数点，所得到新的数就比原数多120.6，原来的一位小数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">120.6 / 9</gadget>
<output>13.4</output>

<result>13.4</result>