A batch of TV shopping malls increased the ex-factory price by 35%, and later discounted 10% and sent 50 yuan to play, still making a profit of 208 yuan. What is the ex-factory price?
一批电视商场在出厂价上增加35%，后来打9折并送50元打的费仍然获利208元，出厂价多少？
<gadget id="calculator">50 + 208</gadget>
<output>258</output>

<gadget id="calculator">90 / 100</gadget>
<output>9/10 = around 0.9</output>

<gadget id="calculator">35 / 100</gadget>
<output>7/20 = around 0.35</output>

<gadget id="calculator">(7/20) * (9/10)</gadget>
<output>63/200 = around 0.315</output>

<gadget id="calculator">(63/200) - 1</gadget>
<output>-137/200 = around -0.685</output>

<gadget id="calculator">(9/10) + (-137/200)</gadget>
<output>43/200 = around 0.215</output>

<gadget id="calculator">258 / (43/200)</gadget>
<output>1_200</output>

<result>1_200</result>