A construction team excavated 150cm**3 in 5 days. According to this progress, how many days will it take to complete the excavation task of 750cm**3? (Answer with the knowledge of proportion)
某施工队5天挖土150cm**3，照此进度，要完成750cm**3的挖土任务，需要几天？(用比例的知识解答)
<gadget id="calculator">150 / 5</gadget>
<output>30</output>

<gadget id="calculator">750 / 30</gadget>
<output>25</output>

<result>25</result>