After the decimal point of a decimal is moved two places to the right, it increases by 19.8 compared with the original number. What is the original number of this decimal?
一个小数的小数点向右移动两位后，比原来的数增加了19.8，原来这个小数是多少．
<gadget id="calculator">100 - 1</gadget>
<output>99</output>

<gadget id="calculator">19.8 / 99</gadget>
<output>0.2</output>

<result>0.2</result>