The price of a suit is 800 yuan. Now the price of the top is reduced by 1/5, and the price of the trousers is reduced by 15%. Buying this suit is 141 yuan cheaper than before. How much is the price of the top?
一套西装售价是800元，现在上装降价(1/5)，裤子降价15%，买这套西装比原来便宜141元，原来上装卖多少元？
<gadget id="calculator">15 / 100</gadget>
<output>3/20 = around 0.15</output>

<gadget id="calculator">(3/20) * 800</gadget>
<output>120</output>

<gadget id="calculator">141 - 120</gadget>
<output>21</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">(1/5) - (3/20)</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">21 / (1/20)</gadget>
<output>420</output>

<result>420</result>