1, 3, 5, 7, ... According to this rule, what is the 2006th odd number.
1，3，5，7，…按这样的规律，第2006个奇数是多少．
<gadget id="calculator">2_006 - 1</gadget>
<output>2_005</output>

<gadget id="calculator">2 * 2_005</gadget>
<output>4_010</output>

<gadget id="calculator">1 + 4_010</gadget>
<output>4_011</output>

<result>4_011</result>