Among the first 10 natural numbers, the number 9 appears only once (accounting for 10%). Among the first 100 natural numbers, a total of 19 numbers contain the number 9, accounting for 19%. For the first 1000,10**3) natural numbers, what is the percentage.
在前10个自然数中，数字9只出现了1次(占10%)．在前100个自然数中，一共有19个数都含有数字9，占19%．对于前1000,10**3)个自然数，这个百分比是多少．
<gadget id="calculator">100 + 90 + 80</gadget>
<output>270</output>

<gadget id="calculator">270 / 1_000</gadget>
<output>27/100 = around 0.27</output>

<result>27/100 = around 0.27</result>