The school organizes 346 students to go to the park and line up in two columns. The distance between two adjacent rows is 0.5 meters. The team walks 65 meters per minute. Now they pass a bridge with a length of 889 meters. From the first two people on the bridge to the last two people How many minutes does it take to leave the bridge?
学校组织346名同学去公园，排成两路纵队，相邻两排间相距0.5米，队伍每分钟走65米，现在经过一座长889米的桥，从排头两人上桥到排尾两人离桥，共需要多少分钟？
<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>