Xiaohong and Xiaogang helped the school librarian to compile the book numbers. Originally, they were assigned 5:4 to Xiaohong and Xiaogang. When the work was completed, Xiaohong compiled 216 books, which was more than 20% of the original assigned task. How much did they give? book number?
小红和小刚帮助学校图书管理员编书号，原来按5：4分给小红和小刚，结果完工时，小红编了216本，超过原分配任务的20%，两人共给多少本书编号？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 + (1/5)</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">216 / (6/5)</gadget>
<output>180</output>

<gadget id="calculator">5 + 4</gadget>
<output>9</output>

<gadget id="calculator">5 / 9</gadget>
<output>5/9 = around 0.555556</output>

<gadget id="calculator">180 / (5/9)</gadget>
<output>324</output>

<result>324</result>