Add 54 eight e i g h t and 67eight e i g h t giving your answers in base eight

Add 54 ${}_{eight}$ and 67${}_{eight}$ giving your answers in base eight

Answer Details

54 ${}_{eight}$ and 67${}_{eight}$ = 1438
Starting with normal addition, 4 + 7 gives 11
(it is more than the base, 8) 8 goes in 11 just 1 time, remaining 3, the remainder will be written, and the 1 will be added to the sum of 5 and 6 which gives 12 altogether, 8 goes in 12 one time remaining 4, the remainder 4 was written and then the 1 that was the quotient was then written since nothing to add the 1 to.
So answer is 143 in base eight