There are 40 numbers in a column: 1, 1, 2, 3, 5, 8, 13, 21, 34.... What percentage of the total are odd numbers in this column?
一列数字共40个：1，1，2，3，5，8，13，21，34…．这列数中奇数占总数的几分之几？
<gadget id="calculator">13 * 2</gadget>
<output>26</output>

<gadget id="calculator">26 + 1</gadget>
<output>27</output>

<gadget id="calculator">27 / 40</gadget>
<output>27/40 = around 0.675</output>

<result>27/40 = around 0.675</result>