We're dividing 70399 by 8 
Our goal is to divide 70399 by 8.

Advancing to step 1:
8 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (0) from the dividend, attach it to 7 and continue: 70 / 8

Step 2:
If we divide 70 by 8, we get 8 and a remainder of 6.
Use 8 as the next digit of our solution. 
Result so far: 8.0
If we subtract 64 from 70, we get 6.
Grab the next digit (3) from the dividend, add it to 6, then carry on: 63 / 8

Step 3:
63 divided by 8 is 7 with a remainder of 7.
The next digit of our result is 7. 
Result so far: 87.0
If we take 56 away from 63, we end up with 7.
Bring next digit (9) of the dividend behind the 7 and repeat the process: 79 / 8

Going ahead to step 4:
When dividing 79 by 8, we get 9 with a remainder of 7.
Put 9 as the next digit of the answer. 
Result so far: 879.0
The remainder is 7 after subtracting 72 from 79.
Fetch the next digit (9) from the dividend, attach it to 7 and continue: 79 / 8

Let's proceed to step 5:
79 divided by 8 is 9 with a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 8799.0
Subtracting 72 from 79 leaves us with 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Moving on to step 6:
70 divided by 8 is 8 with a remainder of 6.
The number 8 becomes the next digit in our result. 
Result so far: 8799.8
If we subtract 64 from 70, we get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 7:
8 can be fit into 60 7 times, resulting in a remainder of 4.
The number 7 becomes the next digit in our result. 
Result so far: 8799.87
Subtracting 56 from 60 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Advancing to step 8:
8 goes into 40 5 times with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 8799.875
The remainder is 0 after subtracting 40 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
8 goes into 0 0 times with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 8799.875
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 10:
8 can be fit into 0 0 times, resulting in a remainder of 0.
The next digit of our result is 0. 
Result so far: 8799.875
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The final outcome is 8799.875, with a leftover of 0.0.