A shopping mall has a promotion during the May 1st Labor Day, selling all the products at a 30% discount, and the promotional price of a washing machine is 427 yuan. How much is the original price of this washing machine?
某商场在五一劳动节期间促销，将全场商品打七折出售，一台洗衣机促销价是427元．这台洗衣机原价是多少元？
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">427 / (7/10)</gadget>
<output>610</output>

<result>610</result>