In one inspection, a fleet of 30 floats was inspected, each car was 4 meters long, and each car was separated by 5 meters. How long is this train line up?
在一次检阅中，接受检阅的一列彩车车队共30辆，每辆车长4米，前后每辆车相隔5米．这列车队共排列多长？
<gadget id="calculator">30 - 1</gadget>
<output>29</output>

<gadget id="calculator">5 * 29</gadget>
<output>145</output>

<gadget id="calculator">4 * 30</gadget>
<output>120</output>

<gadget id="calculator">145 + 120</gadget>
<output>265</output>

<result>265</result>