The fruit shop brings in 22 boxes of apples and 28 boxes of pears, each weighing 15 kilograms. How many kilograms are the apples and pears in total?
水果店运进22箱苹果和28箱梨，每箱都是15千克，运来的苹果和梨一共多少千克？
<gadget id="calculator">22 + 28</gadget>
<output>50</output>

<gadget id="calculator">15 * 50</gadget>
<output>750</output>

<result>750</result>