There are 15 boxes of apples and 23 boxes of pears in the car. Each box weighs 30 kilograms. How many kilograms of fruit are there in the car?
车上有苹果15箱，有雪梨23箱，每一箱的重量都是30千克，车上一共有水果多少千克？
<gadget id="calculator">15 + 23</gadget>
<output>38</output>

<gadget id="calculator">30 * 38</gadget>
<output>1_140</output>

<result>1_140</result>