The decimal point of a decimal is moved to the right by 73.8, what is the original decimal?
一个小数的小数点向右移动一位后比原来增加73.8，原来的小数是多少．
<gadget id="calculator">10 - 1</gadget>
<output>9</output>

<gadget id="calculator">73.8 / 9</gadget>
<output>8.2</output>

<result>8.2</result>