After multiplying a number by 100 times, the new number obtained is 396 more than the original number. What is the original number?
把一个数扩大100倍后得到的新数比原数多396，原数是多少．
<gadget id="calculator">100 - 1</gadget>
<output>99</output>

<gadget id="calculator">396 / 99</gadget>
<output>4</output>

<result>4</result>