"Shi'ao" Elementary School organizes 80 students in the fourth, fifth and sixth grades to go to the summer camp. These students march in two columns. The distance between the students in the fourth, fifth and sixth grades is 0.5 meters, 1 meter and 1.5 meters respectively. meters, the distance between grades is 3 meters, and it took the whole team 5 minutes to cross a wooden bridge. It is known that they walk 100 meters per minute. So, what is the length of this wooden bridge in meters?
"世奥"小学组织四、五、六年级各80名学生去夏令营，这些学生分成两列纵队行进，四、五、六年级前后两名学生之间的距离分别是0.5米、1米、1.5米，年级之间的距离是3米，整个队伍通过一座木桥用了5分钟，已知他们每分钟行走100米．那么，这座木桥的长度是多少米？
<gadget id="calculator">5 * 100</gadget>
<output>500</output>

<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<gadget id="calculator">40 - 1</gadget>
<output>39</output>

<gadget id="calculator">0.5 + 1 + 1.5</gadget>
<output>3</output>

<gadget id="calculator">39 * 3</gadget>
<output>117</output>

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

<gadget id="calculator">117 + 6</gadget>
<output>123</output>

<gadget id="calculator">500 - 123</gadget>
<output>377</output>

<result>377</result>