We're dividing 869613 by 80 
We want to figure out the number of times 869613 can be divided by 80.

Advancing to step 1:
8 divided by 80 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 80

Moving on to step 2:
If we divide 86 by 80, we get 1 and a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 80 from 86 to get 6.
Include the next digit (9) from the dividend after 6, then repeat: 69 / 80

Advancing to step 3:
69 divided by 80 is 0 with a remainder of 69.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
The remainder is 69 after subtracting 0 from 69.
Take the next digit (6) from the dividend and append it to 69, then repeat: 696 / 80

Step 4:
If we divide 696 by 80, we get 8 and a remainder of 56.
Write down 8 as next digit of the result. 
Result so far: 108.0
Deduct 640 from 696 and we're left with 56.
Take the next digit (1) from the dividend and append it to 56, then repeat: 561 / 80

Let's proceed to step 5:
The number 80 fits into 561 7 times, leaving a remainder of 1.
Put 7 as the next digit of the answer. 
Result so far: 1087.0
Subtract 560 from 561 to get 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 80

Advancing to step 6:
When dividing 13 by 80, we get 0 with a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 10870.0
If we subtract 0 from 13, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 7:
The number 80 fits into 130 1 times, leaving a remainder of 50.
Record the quotient 1 as the next digit in the result. 
Result so far: 10870.1
If we take 80 away from 130, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Going ahead to step 8:
If we divide 500 by 80, we get 6 and a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 10870.16
If we take 480 away from 500, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
If we divide 200 by 80, we get 2 and a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 10870.162
Subtracting 160 from 200 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 10:
400 divided by 80 is 5 with a remainder of 0.
The next digit of our result is 5. 
Result so far: 10870.1625
Subtracting 400 from 400 leaves us 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.

On to step 11:
If we divide 0 by 80, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 10870.1625
Subtracting 0 from 0 leaves us 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.

Going ahead to step 12:
80 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 10870.1625
Deduct 0 from 0 and we're left 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.

The final outcome is 10870.1625, with a leftover of 0.0.