Xiao Ming bought 4 storybooks, and spent a total of 142 yuan. Xiaofang bought 12 of the same storybooks, how much did they cost in total?
小明买了4本故事书，一共用了142元，小芳买了12本同样的故事书，一共需要多少钱？
<gadget id="calculator">142 / 4</gadget>
<output>71/2 = around 35.5</output>

<gadget id="calculator">(71/2) * 12</gadget>
<output>426</output>

<result>426</result>