Add two zeros to the end of a natural number, the resulting number is 297 more than the original number, what is the natural number?
给一个自然数的末尾加上两个零，所得的数比原数多297，这个自然数是多少．
<gadget id="calculator">100 - 1</gadget>
<output>99</output>

<gadget id="calculator">297 / 99</gadget>
<output>3</output>

<result>3</result>