The fruit store sells 4 boxes of apples, each box is 25 kg, and there are 125 kg left. How many kilograms of apples are there in the fruit store?
水果店卖出4箱苹果，每箱25千克，还剩125千克，水果店原有苹果多少千克？
<gadget id="calculator">25 * 4</gadget>
<output>100</output>

<gadget id="calculator">100 + 125</gadget>
<output>225</output>

<result>225</result>