Answer
$23536_{seven}$
Work Step by Step
Rightmost column: $2+4=6=6\times 1=6_{seven}$
record the $6$, no carry,
$\left[\begin{array}{llllll}
& & & & & \\
& 1 & 4 & 6 & 3 & 2_{seven}\\
+ & & 5 & 6 & 0 & 4_{seven}\\
& - & - & - & - & -\\
& & & & & 6_{seven}
\end{array}\right.$
Next column:
$3+0=3\times 1=3_{seven}$
record the $3$, no carry,
$\left[\begin{array}{llllll}
& & & & & \\
& 1 & 4 & 6 & 3 & 2_{seven}\\
+ & & 5 & 6 & 0 & 4_{seven}\\
& - & - & - & - & -\\
& & & & 3 & 6_{seven}
\end{array}\right.$
Next column: $6+6=12=1\times 7+5\times 1=15_{seven}$
record the $5$, carry the 1,
$\left[\begin{array}{llllll}
& & 1 & & & \\
& 1 & 4 & 6 & 3 & 2_{seven}\\
+ & & 5 & 6 & 0 & 4_{seven}\\
& - & - & - & - & -\\
& & & 5 & 3 & 6_{seven}
\end{array}\right.$
Next column: $1+4+5=10=1\times 7+3\times 1=13_{seven}$
record the $3$, carry the 1,
$\left[\begin{array}{llllll}
& 1 & 1 & & & \\
& 1 & 4 & 6 & 3 & 2_{seven}\\
+ & & 5 & 6 & 0 & 4_{seven}\\
& - & - & - & - & -\\
& & 3 & 5 & 3 & 6_{seven}
\end{array}\right.$
Last column: $1+1=2=2_{seven}$
Record the 2
Result: $23536_{seven}$
