Uncle Wang printed a manuscript, typed (1/4) of the entire manuscript on the first day, typed (3/5) on the second day, and finished typing the rest on the third day. What percentage of all manuscripts were typed on the third day?
王叔叔打印一份稿件，第一天打了整个稿件的(1/4)，第二天打了(3/5)，剩下的第三天打完．第三天打了全部稿件的几分之几？
<gadget id="calculator">1 / 4</gadget>
<output>1/4 = around 0.25</output>

<gadget id="calculator">3 / 5</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">1 - (1/4) - (3/5)</gadget>
<output>3/20 = around 0.15</output>

<result>3/20 = around 0.15</result>