Dad bought 15 yuan a rose and bought 3 roses. If you use this money to buy 9 yuan a box of chocolates, how many boxes can you buy?
爸爸买15元一枝的玫瑰，买了3枝，如果用这些钱买9元一盒的巧克力，可以买几盒？
<gadget id="calculator">3 / 9</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">15 * (1/3)</gadget>
<output>5</output>

<result>5</result>