Xiaoxiao and Naughty collected pictures together. The pictures of famous mountains accounted for 65%, and the pictures of rivers accounted for 35%. The pictures of rivers were 30 less than the pictures of famous mountains. How many pictures did they collect in total?
笑笑和淘气一起收集图片，收集的名山图片占65%，河流图片占35%，河流图片比名山图片少30张，他们一共收集了多少张图片？
<gadget id="calculator">65 / 100</gadget>
<output>13/20 = around 0.65</output>

<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">(13/20) - (7/20)</gadget>
<output>3/10 = around 0.3</output>

<gadget id="calculator">30 / (3/10)</gadget>
<output>100</output>

<result>100</result>