The older sister, younger sister and younger brother made some flowers, the older sister made 5 flowers, and the younger sister made 4 flowers. The number of flowers made by my sister accounted for (5/11) of the total number of these flowers. How many flowers did my brother make?
姐姐、妹妹和弟弟做了一些花，姐姐做了5朵花，妹妹做了4朵花．姐姐做的花的朵数占这些花总数的(5/11)．弟弟做了多少朵花？
<gadget id="calculator">5 / 11</gadget>
<output>5/11 = around 0.454545</output>

<gadget id="calculator">5 / (5/11)</gadget>
<output>11</output>

<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">11 - 9</gadget>
<output>2</output>

<result>2</result>