After the unit price of an LCD TV is increased (1/4), the price is 5,000 yuan. How much is the original price of this LCD TV?
一台液晶电视机单价升高(1/4)后，售价5000元，这台液晶电视原价多少元？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 + (1/4)</gadget>
<output>5/4 = around 1.25</output>

<gadget id="calculator">5_000 / (5/4)</gadget>
<output>4_000</output>

<result>4_000</result>