The original price of a pair of badminton rackets was 48 yuan. When the school bought them, the price of each pair was reduced by 15 yuan. Now, if you buy 28 badminton rackets, how much less will you pay?
一副球拍原标价是48元，学校购买时，每副降价15元，现在买28副羽毛球拍，比原来少付多少元？
<gadget id="calculator">15 * 28</gadget>
<output>420</output>

<result>420</result>