A suit is sold at 20% off, which is 42 yuan cheaper. What is the current price of this suit?
一套西服打八折出售，便宜了42元，这套西服现价是多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">1 - (4/5)</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">42 / (1/5)</gadget>
<output>210</output>

<gadget id="calculator">210 - 42</gadget>
<output>168</output>

<result>168</result>