An engineering team completed (2/5) of the whole project on the first day, and completed less (1/20) of the whole project on the second day than on the first day. What percentage of the whole project was completed on the second day?
某工程队第一天完成全工程的(2/5)，第二天比第一天少完成全工程的(1/20)，第二天完成全工程的几分之几？
<gadget id="calculator">2 / 5</gadget>
<output>2/5 = around 0.4</output>

<gadget id="calculator">1 / 20</gadget>
<output>1/20 = around 0.05</output>

<gadget id="calculator">(2/5) - (1/20)</gadget>
<output>7/20 = around 0.35</output>

<result>7/20 = around 0.35</result>