Zhang Ming has 48 pictures, Wang Gang has 39 pictures, Li Sheng's pictures are twice the total number of Zhang Ming and Wang Gang, how many pictures does Li Sheng have?
张明有48张图片，王刚有39张图片，李胜的图片是张明与王刚的总数的2倍，李胜有多少张？
<gadget id="calculator">48 + 39</gadget>
<output>87</output>

<gadget id="calculator">87 * 2</gadget>
<output>174</output>

<result>174</result>