It costs 36 yuan per kilogram of beef and 14 yuan per kilogram of apples. Uncle Li buys 3 kilograms of beef and 3 kilograms of apples. How much will it cost in total?
每千克牛肉36元，每千克苹果14元，李叔叔买牛肉和苹果各3千克，共要用多少元？
<gadget id="calculator">36 + 14</gadget>
<output>50</output>

<gadget id="calculator">50 * 3</gadget>
<output>150</output>

<result>150</result>