Draw some numbers from one thousand natural numbers from 1 to 1000. If the sum of any two numbers drawn out is not a multiple of 5. Then, from these thousand natural numbers, how many numbers can be drawn at most?
从1到1000的一千个自然数中抽出若干个数来．如果抽出的这些数中任何两个数之和都不是5的倍数．那么，从这一千个自然数中，最多能抽出多少个数．
<gadget id="calculator">200 + 200 + 1</gadget>
<output>401</output>

<result>401</result>