Wang Ming's family traveled to Hainan and needed 450 yuan per day for accommodation. They arrived in Hainan on the morning of May 26 and returned on the morning of June 3. How much do they need for board and lodging in total for this trip?
王明一家去海南旅游，每天住宿费需要450元，他们5月26日早晨到达海南、6月3日早晨返回．他们这次旅游共需要食宿费多少元？
<gadget id="calculator">31 - 26</gadget>
<output>5</output>

<gadget id="calculator">5 + 1 + 2</gadget>
<output>8</output>

<gadget id="calculator">450 * 8</gadget>
<output>3_600</output>

<result>3_600</result>