The store holds a sales promotion, and the price of a product has dropped (1/5) from the original price, and the current price is 1440 yuan. How much is the original price of the product?
商店举办促销活动，某商品比原价下降了(1/5)，现售价为1440元，问该商品原价是多少元？
<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">1 - (1/5)</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1_440 / (4/5)</gadget>
<output>1_800</output>

<result>1_800</result>