The school wants to add two new books to the library, one is 115 yuan per set, the other is 85 yuan per set, 3 sets of each kind, how much will it cost in total?
学校要为图书馆增添两种新书，一种每套115元，另一种每套85元，每种3套，一共要花多少钱？
<gadget id="calculator">115 + 85</gadget>
<output>200</output>

<gadget id="calculator">200 * 3</gadget>
<output>600</output>

<result>600</result>