Students in a certain class subscribed to 3 newspapers, and each student subscribed to 2 of them. 26 people subscribed to the story newspaper, 30 people subscribed to the Chinese newspaper, and 34 people subscribed to the mathematics newspaper. How many people reported the story?
某班同学订了3种报纸，每个同学都订了其中的2种，有26人订了故事报，有30人订了语文报，有34人订了数学报，求同时订数学报和故事报的有多少人？
<gadget id="calculator">26 + 30 + 34</gadget>
<output>90</output>

<gadget id="calculator">90 / 2</gadget>
<output>45</output>

<gadget id="calculator">45 - 30</gadget>
<output>15</output>

<result>15</result>