There are 143 households in a residential area in Hangzhou. According to the statistics, the two newspapers subscribed to "Metropolis Express" and "Qianjiang Evening News" are as follows: 80 households subscribed to "Metropolis Express" and 75 households subscribed to "Qianjiang Evening News". There are 25 households who subscribe to both newspapers. What information can you obtain based on the materials provided? Please add a question and answer it.
杭城某小区共有143户住户，据统计订阅《都市快报》和《钱江晚报》这两种报纸情况如下：订阅《都市快报》的有80户，订阅《钱江晚报》的有75户，两种报纸都订的有25户．根据提供的材料你还能获取那些信息？请补上一个问题，并解答．
<gadget id="calculator">75 - 25</gadget>
<output>50</output>

<gadget id="calculator">80 + 50</gadget>
<output>130</output>

<gadget id="calculator">143 - 130</gadget>
<output>13</output>

<result>13</result>