During the National Day shopping malls, there is a promotional activity. A four-wheel drive is 24 yuan. Buy 5 and get 1 free. Xiaohua buys 5 at a time. How much is each cheaper?
国庆节商场搞促销活动，四驱车一个24元，买5个送一个，小华一次买5个，每个便宜多少元？
<gadget id="calculator">5 + 1</gadget>
<output>6</output>

<gadget id="calculator">5 / 6</gadget>
<output>5/6 = around 0.833333</output>

<gadget id="calculator">24 * (5/6)</gadget>
<output>20</output>

<gadget id="calculator">24 - 20</gadget>
<output>4</output>

<result>4</result>