The fifth grade students planted 80 flowers, but 7 of them did not survive. What is the fraction of the total number of living trees?
五年级同学栽80棵花，有7棵没有成活．活的棵数是总数的几分之几？
<gadget id="calculator">80 - 7</gadget>
<output>73</output>

<gadget id="calculator">73 / 80</gadget>
<output>73/80 = around 0.9125</output>

<result>73/80 = around 0.9125</result>