A bouquet of flowers is 30 yuan, buy 5 and get 1 free. Aunt Li bought 6 bouquets at a time. How much is each bouquet cheaper?
一束鲜花30元，买5束送1束，李阿姨一次买了6束，每束鲜花便宜了多少钱？
<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">30 * (5/6)</gadget>
<output>25</output>

<gadget id="calculator">30 - 25</gadget>
<output>5</output>

<result>5</result>