The school organized 346 students to visit the "Shenzhou VI" manned spacecraft photo exhibition in the Science and Technology Museum. Bridge, how many minutes?
学校组织346名同学去科技馆参观"神州六号"载人宇宙飞船图片展览，排成两路纵队，相邻两人相距0.5米，队伍每分钟走65米，现在要经过一座长889米的桥，需要多少分钟？
<gadget id="calculator">346 / 2</gadget>
<output>173</output>

<gadget id="calculator">173 - 1</gadget>
<output>172</output>

<gadget id="calculator">172 * 0.5</gadget>
<output>86</output>

<gadget id="calculator">86 + 889</gadget>
<output>975</output>

<gadget id="calculator">975 / 65</gadget>
<output>15</output>

<result>15</result>