The 2012 Nobel Prize in Literature winner Mo Yan's book "Collected Works of Mo Yan" is on sale at a 30% discount on Dangdang.com. The price is 490 yuan. What is the price of the book?
2012年诺贝尔文学奖获得者莫言的著作《莫言文集》，在当当网上打七折出售，售价为490元，书的标价是多少元．
<gadget id="calculator">70 / 100</gadget>
<output>7/10 = around 0.7</output>

<gadget id="calculator">490 / (7/10)</gadget>
<output>700</output>

<result>700</result>