Xiaojun reads a book and reads 45 pages in 3 days. According to this calculation, he reads it in 2 days. How many pages have he read in total?
小军看一本书，3天看了45页，照这样计算，又看了2天，前后一共看了多少页？
<gadget id="calculator">45 / 3</gadget>
<output>15</output>

<gadget id="calculator">15 * 2</gadget>
<output>30</output>

<gadget id="calculator">30 + 45</gadget>
<output>75</output>

<result>75</result>