Each basket of apples is 35 kg, and each basket of pears is 30 kg. The kindergarten bought 3 baskets of apples and 3 baskets of pears. How many kilograms are there more apples than pears?
每筐苹果35千克，每筐梨30千克．幼儿园买了3筐苹果，3筐梨．苹果比梨多多少千克？
<gadget id="calculator">35 * 3</gadget>
<output>105</output>

<gadget id="calculator">30 * 3</gadget>
<output>90</output>

<gadget id="calculator">105 - 90</gadget>
<output>15</output>

<result>15</result>