A four-digit number is 2003.4 smaller than the original number after adding a decimal point. What is the four-digit number?
一个四位数，给它加上小数点后比原数小2003.4，这个四位数是多少．
<gadget id="calculator">1 / 10</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">2_003.4 / (9/10)</gadget>
<output>2_226</output>

<result>2_226</result>