There is a four-digit number, add some 0s at the end, and add to this four-digit number, the result is 202404. What is the four-digit number.
有一个四位数，在末尾加一些0，再与这个四位数相加，得数是202404．这个四位数是多少．
<gadget id="calculator">100 + 1</gadget>
<output>101</output>

<gadget id="calculator">202_404 / 101</gadget>
<output>2_004</output>

<result>2_004</result>