A certain fruit shop shipped 150 boxes of apples, each weighing 25 kilograms. After selling some, there were 28 boxes left. How many kilograms of apples were sold?
某水果店运来150箱苹果，每箱25千克，卖出一些后，还剩28箱，卖出了多少千克苹果．
<gadget id="calculator">150 - 28</gadget>
<output>122</output>

<gadget id="calculator">122 * 25</gadget>
<output>3_050</output>

<result>3_050</result>