The current price of an MP3 player is 120 yuan, which is 1/4 lower than before. How much is the original price?
一个MP3现在的售价是120元，比原来降了(1/4)，原价是多少元？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">1 - (1/4)</gadget>
<output>3/4 = around 0.75</output>

<gadget id="calculator">120 / (3/4)</gadget>
<output>160</output>

<result>160</result>