After removing the decimal point of a two-digit number, it is 29.7 larger than the original number. What is the original number?
把一个两位小数的小数点去掉后比原数大29.7，原来小数是多少．
<gadget id="calculator">100 - 1</gadget>
<output>99</output>

<gadget id="calculator">29.7 / 99</gadget>
<output>0.3</output>

<result>0.3</result>