After removing the decimal point of a two-digit decimal, it is 1981.98 larger than the original number. What is the original two-digit decimal?
把一个两位小数的小数点去掉后，比原数大1981.98，原来这个两位小数是多少．
<gadget id="calculator">100 - 1</gadget>
<output>99</output>

<gadget id="calculator">1_981.98 / 99</gadget>
<output>20.02</output>

<result>20.02</result>