How many odd numbers between 200 and 500 have different numbers in the hundreds, tens and ones?
200到500之间的奇数，百位、十位和个位上的数字都不相同的有几个？
<gadget id="calculator">500 - 200</gadget>
<output>300</output>

<gadget id="calculator">300 / 2</gadget>
<output>150</output>

<gadget id="calculator">150 - 1</gadget>
<output>149</output>

<result>149</result>