The fruit shop brought 7 baskets of apples, sold 150 kilograms, and left 60 kilograms. How many kilograms does each basket of apples weigh on average?
水果店运来7筐苹果，卖了150千克，还剩60千克．平均每筐苹果重多少千克？
<gadget id="calculator">150 + 60</gadget>
<output>210</output>

<gadget id="calculator">210 / 7</gadget>
<output>30</output>

<result>30</result>