The school needs to buy 40 sets of desks and stools, each stool is 25 yuan, and the unit price of the desk is 100 yuan. How much does the school need to buy these desks and chairs?
学校要添置40套课桌凳，凳子每条25元，桌子的单价100元，学校买这些课桌椅共需要多少钱？
<gadget id="calculator">25 + 100</gadget>
<output>125</output>

<gadget id="calculator">125 * 40</gadget>
<output>5_000</output>

<result>5_000</result>