The students did exercises, Xiaohua did 75 questions, Xiaoming did 85 questions, Xiaoqing was 30 less than the total of Xiaohua and Xiaoming, how many questions did Xiaoqing do?
同学们做习题，小华做了75道，小明做了85道，小青比小华和小明的总数少30道，小青做了多少道？
<gadget id="calculator">85 - 30</gadget>
<output>55</output>

<gadget id="calculator">75 + 55</gadget>
<output>130</output>

<result>130</result>