A certain electrical appliance store held promotional activities, and the price of a type of computer was reduced by 20%, which was 700 yuan cheaper than before. How much is the original price of this computer?
某电器商场搞促销活动，一种电脑降价了20%，比原来便宜了700元．这种电脑的原价是多少钱？
<gadget id="calculator">20 / 100</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">700 / (1/5)</gadget>
<output>3_500</output>

<result>3_500</result>