There is a guard of honor composed of soldiers from the three arms of the sea, land and air. There are 400 people in each arm, and they are all divided into 8 vertical rows and marched side by side. The distance between each row before and after the navy is 1 meter, the distance between each row before and after the army is 2 meters, and the distance between each row before and after the air force is 3 meters. The distance between each arms team is 5 meters. Soldiers of the three arms walk 90 meters per minute, and the guard of honor needs 4 points to pass the reviewing stand. So what is the total length of the reviewing stand?
有海、陆、空三个兵种的士兵组成的仪仗队．每兵种队伍有400人，都平均分成8竖行并列行进．海军前后每行间隔1米，陆军前后每行间隔2米，空军前后每行间隔3米．每兵种队伍之间相隔5米．三兵种士兵每分都走90米，仪仗队通过检阅台需要4分．那么检阅台总长为多少米．
<gadget id="calculator">4 * 90</gadget>
<output>360</output>

<gadget id="calculator">8 - 1</gadget>
<output>7</output>

<gadget id="calculator">2 * 7</gadget>
<output>14</output>

<gadget id="calculator">1 * 7</gadget>
<output>7</output>

<gadget id="calculator">3 * 7</gadget>
<output>21</output>

<gadget id="calculator">3 - 1</gadget>
<output>2</output>

<gadget id="calculator">5 * 2</gadget>
<output>10</output>

<gadget id="calculator">14 + 7 + 21 + 10</gadget>
<output>52</output>

<gadget id="calculator">360 - 52</gadget>
<output>308</output>

<result>308</result>