The school will add two new books to the library: 125 yuan for each set of encyclopedia, 18 yuan for each set of situational mathematics, and buy 3 sets of each. How much will it cost in total.
学校要为图书馆增添两种新书：百科全书每套125元，情景数学每套18元，每种买3套．一共要花多少钱．
<gadget id="calculator">125 * 3</gadget>
<output>375</output>

<gadget id="calculator">18 * 3</gadget>
<output>54</output>

<gadget id="calculator">375 + 54</gadget>
<output>429</output>

<result>429</result>