A shopping mall buys a batch of TV sets, sets the price according to 20% of the profit, and then advertises that "sell it at a 10% discount, and give away 50 yuan for the fare". In fact, each TV set can also earn a profit of 120 yuan. How much is the purchase price of each machine?
某商场进回一批电视机，按获利20%定价，然后打出"九折出售，外送50元乘车费"的广告，实际每台电视机还可以获得120元的利润，这种电视机每台的进价是多少元？
<gadget id="calculator">50 + 120</gadget>
<output>170</output>

<gadget id="calculator">1.08 - 1</gadget>
<output>0.08</output>

<gadget id="calculator">170 / 0.08</gadget>
<output>2_125</output>

<result>2_125</result>