Answer
=60,919$$
Work Step by Step
RECALL:
In the hexadecimal system. $D=13, E=14$, and $F=15$
Thus, the expanded form of $EDF7_{\text{sixteen}}$ is:
$=(14 \times 16^3) + (13 \times 16^2)+(15 \times 16^1) + (7 \times 1)
\\=(14 \times 4096) + (13 \times 256) + (15 \times 16) + 7
\\=57,344+3,328 + 240+7
\\=60,919$
