Uncle Wang sells pears, apples, and oranges. Their weight ratio is 3:4:6. Among them, oranges are 80 kilograms more than apples. How many kilograms are pears?
王叔叔卖梨、苹果、桔子三种水果，它们的重量比是3：4：6，其中桔子比苹果多80千克，梨有多少千克？
<gadget id="calculator">6 - 4</gadget>
<output>2</output>

<gadget id="calculator">80 / 2</gadget>
<output>40</output>

<gadget id="calculator">40 * 3</gadget>
<output>120</output>

<result>120</result>