There are 28 boxes of pears, 20 kilograms per box, and 6 yuan per kilogram of pears. How much do these pears sell for in total?
有28箱梨，每箱20千克，每千克梨6元．这些梨一共能卖多少钱？
<gadget id="calculator">28 * 20</gadget>
<output>560</output>

<gadget id="calculator">6 * 560</gadget>
<output>3_360</output>

<result>3_360</result>