If a number is enlarged to 100 times, it is 108.9 more than the original number, what is the original number?
一个数扩大到它的100倍后比原来的数多108.9，原数是多少．
<gadget id="calculator">100 - 1</gadget>
<output>99</output>

<gadget id="calculator">108.9 / 99</gadget>
<output>1.1</output>

<result>1.1</result>