The school library plans to add two new books, "Children's Encyclopedia" and "Mathematical Guess". Each set of "Children's Encyclopedia" is 125 yuan, and "Mathematical Guess" is 18 yuan per set. How much does it cost to buy 5 sets of each of the two books?
学校图书馆准备增添《儿童百科》和《数学猜想》两种新书，《儿童百科》每套125元，《数学猜想》每套18元．两种书各买5套，一共要多少钱？
<gadget id="calculator">125 + 18</gadget>
<output>143</output>

<gadget id="calculator">143 * 5</gadget>
<output>715</output>

<result>715</result>