To celebrate the 20th anniversary of its opening, Xinhua Bookstore is offering a set of "Children's Encyclopedia" which was originally priced at 245 yuan. The current price is 125 yuan per set. If you buy 24 sets at a time, how much can you save in total?
新华书店为庆祝开业20周年，原价245元一套的《儿童百科全书》，现价每套125元，一次买24套，一共能便宜多少元钱？
<gadget id="calculator">245 - 125</gadget>
<output>120</output>

<gadget id="calculator">120 * 24</gadget>
<output>2_880</output>

<result>2_880</result>