The number of red flowers is less than that of blue flowers (2/7), and the number of blue flowers is much more than that of red flowers.
红花的朵数比蓝花少(2/7)，蓝花的朵数比红花多多少．
<gadget id="calculator">2 / 7</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">1 - (2/7)</gadget>
<output>5/7 = around 0.714286</output>

<gadget id="calculator">1 - (5/7)</gadget>
<output>2/7 = around 0.285714</output>

<gadget id="calculator">(2/7) / (5/7)</gadget>
<output>2/5 = around 0.4</output>

<result>2/5 = around 0.4</result>