There are 30 story books, and the number of story books is less than that of comic books (1/3). How many books are there in total?
有30本故事书，故事书比连环画少(1/3)，两种书一共有多少本．
<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">1 - (1/3)</gadget>
<output>2/3 = around 0.666667</output>

<gadget id="calculator">30 / (2/3)</gadget>
<output>45</output>

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

<result>75</result>