Central Primary School purchased 75 sets of new desks in the new semester, each desk was 65 yuan, and each chair was 35 yuan. How much is the total cost?
中心小学新学期购进75套新课桌，每张课桌65元，每把椅子35元．共需多少元？
<gadget id="calculator">65 + 35</gadget>
<output>100</output>

<gadget id="calculator">100 * 75</gadget>
<output>7_500</output>

<result>7_500</result>