A certain brand of toothpaste is 8 yuan per box. Sunshine Supermarket implements a promotional activity, buy 3 boxes and get 1 box free. Mom needs to buy 4 boxes, how much is each box?
某种品牌的牙膏每盒8元，阳光超市实行促销活动，买3盒送1盒．妈妈需要买4盒，每盒要多少元？
<gadget id="calculator">3 / 4</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">8 * (3/4)</gadget>
<output>6</output>

<result>6</result>