After moving the decimal point of a number to the right by two places, the number obtained is 19.8 larger than the original number, what is the original number?
把一个数的小数点向右移动两位后，得到的数比原来大19.8，原来的数是多少．
<gadget id="calculator">100 - 1</gadget>
<output>99</output>

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

<result>0.2</result>