Small clothes are 128 yuan per set, large clothes are 145 yuan per set, 20 sets of each kind, how much will it cost in total?
小号衣服128元每套，大号衣服145元每套，每种各买20套，一共要花多少钱？
<gadget id="calculator">128 * 20</gadget>
<output>2_560</output>

<gadget id="calculator">145 * 20</gadget>
<output>2_900</output>

<gadget id="calculator">2_560 + 2_900</gadget>
<output>5_460</output>

<result>5_460</result>