The unit price of a story book is 32 yuan, and the unit price of a story book is more expensive than a fairy tale book (1/7). How much is the unit price of a fairy tale book? (solution with equation)
一本故事书的单价是32元，一本故事书的单价比童话书贵(1/7)．一本童话书的单价是多少元？(用方程解答)
<gadget id="calculator">1 / 7</gadget>
<output>1/7 = around 0.142857</output>

<gadget id="calculator">1 + (1/7)</gadget>
<output>8/7 = around 1.142857</output>

<gadget id="calculator">32 / (8/7)</gadget>
<output>28</output>

<result>28</result>