Suning Electronics Mall handles a batch of TCL TVs. If they sell them at a 25% discount, they will lose 750 yuan; if they cut the price by 15%, they can make a profit of 350 yuan. How much is the purchase price of this TCL TV?
苏宁电器商场处理一批TCL电视机，如果打七五折销售，就要亏损750元；如果降价15%，还可盈利350元，这种TCL电视机进价是多少元？
<gadget id="calculator">750 + 350</gadget>
<output>1_100</output>

<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">75 / 100</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">1 - (3/20) - (3/4)</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">1_100 / (1/10)</gadget>
<output>11_000</output>

<gadget id="calculator">11_000 * (3/4)</gadget>
<output>8_250</output>

<gadget id="calculator">8_250 + 750</gadget>
<output>9_000</output>

<result>9_000</result>