The teacher bought a pair of jeans for 56 yuan in the store, because the jeans there were selling at 30% off. Students please guess, how much is the original price of this pair of jeans?
老师在商店里花了56元钱买了一条牛仔裤，因为那儿的牛仔裤正在打七折销售．请同学们猜猜看，这条牛仔裤原价多少元？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">56 / (7/10)</gadget>
<output>80</output>

<result>80</result>