We're dividing 861857 by 79 
Let's see how many times 79 fits into 861857.

Advancing to step 1:
8 divided by 79 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (6) from the dividend, add it to 8, then carry on: 86 / 79

On to step 2:
79 can be fit into 86 1 times, resulting in a remainder of 7.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 79 from 86, we get 7.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 79

Moving on to step 3:
When dividing 71 by 79, we get 0 with a remainder of 71.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 71, we get 71.
Fetch the next digit (8) from the dividend, attach it to 71 and continue: 718 / 79

Let's proceed to step 4:
The number 79 fits into 718 9 times, leaving a remainder of 7.
Use 9 as the next digit of our solution. 
Result so far: 109.0
The remainder is 7 after subtracting 711 from 718.
Take the next digit (5) from the dividend and append it to 7, then repeat: 75 / 79

Moving on to step 5:
If we divide 75 by 79, we get 0 and a remainder of 75.
The next digit of our result is 0. 
Result so far: 1090.0
The remainder is 75 after subtracting 0 from 75.
Fetch the next digit (7) from the dividend, attach it to 75 and continue: 757 / 79

Advancing to step 6:
79 goes into 757 9 times with a remainder of 46.
The number 9 becomes the next digit in our result. 
Result so far: 10909.0
The remainder is 46 after subtracting 711 from 757.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 7:
The number 79 fits into 460 5 times, leaving a remainder of 65.
Use 5 as the next digit of our solution. 
Result so far: 10909.5
If we subtract 395 from 460, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Let's proceed to step 8:
79 goes into 650 8 times with a remainder of 18.
Record the quotient 8 as the next digit in the result. 
Result so far: 10909.58
Subtract 632 from 650 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 9:
The number 79 fits into 180 2 times, leaving a remainder of 22.
Record the quotient 2 as the next digit in the result. 
Result so far: 10909.582
If we subtract 158 from 180, we get 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 10:
79 can be fit into 220 2 times, resulting in a remainder of 62.
Use 2 as the next digit of our solution. 
Result so far: 10909.5822
Subtract 158 from 220 to get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

The final outcome is 10909.5822, with a leftover of 0.00062.