There are 100 flowers in the school flower bed, among which (1/5) are rose flowers, and the number of rhododendrons is more than that of roses (3/5), how many more rhododendrons than roses?
学校花坛里有100株花，其中(1/5)是月季花，杜鹃花的株数比月季花多(3/5)，杜鹃花比月季花多多少株？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">100 * (1/5) * (3/5)</gadget>
<output>12</output>

<result>12</result>