Lucky and Lucky held a card-taking competition. Everyone had 40 cards. After the game, it was found that Lucky won (1/5). At this time, how many cards are there less than Lucky?
好手气和手气好进行拍卡比赛，原来每人都有40张卡，比赛结束后统计发现，好手气赢了(1/5)，这时，手气好比好手气少多少张？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">40 * (1/4)</gadget>
<output>10</output>

<gadget id="calculator">40 + 10</gadget>
<output>50</output>

<gadget id="calculator">40 * 2</gadget>
<output>80</output>

<gadget id="calculator">80 - 50</gadget>
<output>30</output>

<gadget id="calculator">50 - 30</gadget>
<output>20</output>

<result>20</result>