Xiaoying went to the bookstore to buy books and spent 33 yuan, which happened to be the money she brought (3/7). How much did Xiaoying bring.
小瑛去书店买书用去33元，恰好是所带钱的(3/7)，小瑛带了多少元．
<gadget id="calculator">3 / 7</gadget>
<output>3/7 = around 0.428571</output>

<gadget id="calculator">33 / (3/7)</gadget>
<output>77</output>

<result>77</result>