Xiaohong and Xiaoming each bought a collection of practice questions and used the summer vacation to do exercises. Xiaohong has done 364 questions, Xiaoming has done 228 questions, and the remaining questions are exactly twice that of Xiaohong. How many questions are there in this book?
小红、小明各买了一本练习题集，利用暑假做习题．小红做了364道，小明做了228道后剩下的题目正好是小红剩下的2倍，问此书共有多少题？
<gadget id="calculator">2 - 1</gadget>
<output>1</output>

<gadget id="calculator">228 / 1</gadget>
<output>228</output>

<gadget id="calculator">364 - 228</gadget>
<output>136</output>

<gadget id="calculator">136 + 364</gadget>
<output>500</output>

<result>500</result>