The store sells a kind of men's thermal underwear. The original price is 175 yuan per set. Now each set is sold at a 20% discount. What is the current price of this kind of underwear per set?
商店出售一种男式保暖内衣，原价每套175元，现在每套按八折出售，这种内衣现价每套多少元．
<gadget id="calculator">80 / 100</gadget>
<output>4/5 = around 0.8</output>

<gadget id="calculator">175 * (4/5)</gadget>
<output>140</output>

<result>140</result>