Question

Subtract $1732765$ from $3673124$ in the scale of eight.

Answer 1

$3673124$ from scale of eight to decimal is $4\times 8^0+2\times 8^1+1\times 8^2+3\times 8^3+7\times 8^4+6\times 8^5+3\times 8^6=1013332$

$1732765$ from scale of eight to decimal is $5\times 8^0+6\times 8^1+7\times 8^2+2\times 8^3+3\times 8^4+7\times 8^5+1\times 8^6=505333$

Difference between them is $=1013332-505333=507999$

Now we need to represent this in scale of $8$ is:

When $507999$ is divided by $8$ quotient is $63499$ and remainder is $7$
When $63499$ is divided by $8$ quotient is $7937$ and remainder is $3$
When $7937$ is divided by $8$ quotient is $992$ and remainder is $1$
When $992$ is divided by $8$ quotient is $124$ and remainder is $0$
When $124$ is divided by $8$ quotient is $15$ and remainder is $4$

When $15$ is divided by $8$ quotient is $1$ and remainder is $7$

When $1$ is divided by $8$ quotient is $0$ and remainder is $1$
Hence, the difference is $1740137$ in scale of eight.