There were 1,200 soldiers participating in the military parade, divided into five groups on average, with a distance of 7.5 meters. Each team consists of 6 people in a row with a distance of 2 meters. How many meters is the total length of the whole team?
参加阅兵的战士有1200人，平均分成5个大队，队距是7.5米．每队6人为一排，排距是2米．整个队伍的总长有多少米？
<gadget id="calculator">1_200 / 5</gadget>
<output>240</output>

<gadget id="calculator">240 / 6</gadget>
<output>40</output>

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

<gadget id="calculator">39 * 2</gadget>
<output>78</output>

<gadget id="calculator">78 * 5</gadget>
<output>390</output>

<gadget id="calculator">5 - 1</gadget>
<output>4</output>

<gadget id="calculator">7.5 * 4</gadget>
<output>30</output>

<gadget id="calculator">390 + 30</gadget>
<output>420</output>

<result>420</result>