On Arbor Day, the fifth grade of Xidian Primary School went to plant trees. A total of 76 trees survived and 4 died. What percentage of the total number of dead ones accounted for?
植树节西店小学五年级去种树，共成活了76棵，死了4棵，死亡的占总数的几分之几？
<gadget id="calculator">76 + 4</gadget>
<output>80</output>

<gadget id="calculator">4 / 80</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>