The refrigerators in a store have not been sold after the purchase price was increased by 40%, and then the price was reduced by 10%. As a result, each refrigerator made a profit of 260 yuan. How much is the purchase price of each refrigerator?
某商店的冰箱按进价提高四成后一直没有卖出去，后又降价一成，结果每台冰箱获利260元，每台冰箱的进价是多少元？
<gadget id="calculator">40 / 100</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 + (2/5)</gadget>
<output>7/5 = around 1.4</output>

<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1 - (1/10)</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">(7/5) * (9/10)</gadget>
<output>63/50 = around 1.26</output>

<gadget id="calculator">(63/50) - 1</gadget>
<output>13/50 = around 0.26</output>

<gadget id="calculator">260 / (13/50)</gadget>
<output>1_000</output>

<result>1_000</result>