Xiao Ming, Xiao Gang, Xiao Hong and Xiao Li take a boat tour. A small boat can hold 2 people at a time. How many ways are there?
小明、小刚、小红和小丽乘船浏览，一条小船一次可坐2人，有多少种坐法？
<gadget id="calculator">3 / 2</gadget>
<output>3/2 = around 1.5</output>

<gadget id="calculator">4 * (3/2)</gadget>
<output>6</output>

<result>6</result>