Each set of large sportswear is 30 yuan, and each set of small sportswear is 20 yuan. If you buy 25 sets of large sportswear and 45 sets of small sportswear, how much should you pay in total?
大号运动服每套30元，小号运动服每套20元，买大号运动服25套，小号运动服45套，一共应付多少钱？
<gadget id="calculator">30 * 25</gadget>
<output>750</output>

<gadget id="calculator">20 * 45</gadget>
<output>900</output>

<gadget id="calculator">750 + 900</gadget>
<output>1_650</output>

<result>1_650</result>