The profit of a certain radio is 25% of the cost. It is known that its retail price is 480 yuan per set, so how much is the cost of this radio per set.
某种收音机的利润是成本的二成五，已知它的零售价是每台480元，那么这台收音机的成本是每台多少元．
<gadget id="calculator">25 / 100</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">480 / (5/4)</gadget>
<output>384</output>

<result>384</result>