Summer is here, Yuying School needs 27 barrels of mineral water every day, how many barrels of mineral water are needed in total for 4 weeks (calculated as 5 days per week)?
夏天到了，育英学校每天需要27桶矿泉水，4个星期(每个星期按5天算)一共需要多少桶矿泉水？
<gadget id="calculator">5 * 4 * 27</gadget>
<output>540</output>

<result>540</result>