We're dividing 857859 by 84 
We want to divide 857859 by 84.

Going ahead to step 1:
The number 84 fits into 8 0 times, leaving a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 84

Going ahead to step 2:
84 goes into 85 1 times with a remainder of 1.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 84 away from 85, we end up with 1.
Fetch the next digit (7) from the dividend, attach it to 1 and continue: 17 / 84

Moving on to step 3:
84 can be fit into 17 0 times, resulting in a remainder of 17.
Put 0 as the next digit of the answer. 
Result so far: 10.0
If we subtract 0 from 17, we get 17.
Include the next digit (8) from the dividend after 17, then repeat: 178 / 84

Moving on to step 4:
84 can be fit into 178 2 times, resulting in a remainder of 10.
The number 2 becomes the next digit in our result. 
Result so far: 102.0
Subtract 168 from 178 to get 10.
Take the next digit (5) from the dividend and append it to 10, then repeat: 105 / 84

Let's proceed to step 5:
The number 84 fits into 105 1 times, leaving a remainder of 21.
Put 1 as the next digit of the answer. 
Result so far: 1021.0
If we subtract 84 from 105, we get 21.
Take the next digit (9) from the dividend and append it to 21, then repeat: 219 / 84

Step 6:
84 goes into 219 2 times with a remainder of 51.
Use 2 as the next digit of our solution. 
Result so far: 10212.0
Deduct 168 from 219 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 7:
84 can be fit into 510 6 times, resulting in a remainder of 6.
Write down 6 as next digit of the result. 
Result so far: 10212.6
If we take 504 away from 510, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 8:
The number 84 fits into 60 0 times, leaving a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 10212.6
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Let's proceed to step 9:
84 can be fit into 600 7 times, resulting in a remainder of 12.
Put 7 as the next digit of the answer. 
Result so far: 10212.607
If we subtract 588 from 600, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 10:
84 can be fit into 120 1 times, resulting in a remainder of 36.
The next digit of our result is 1. 
Result so far: 10212.6071
Subtracting 84 from 120 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 11:
When dividing 360 by 84, we get 4 with a remainder of 24.
Put 4 as the next digit of the answer. 
Result so far: 10212.60714
Deduct 336 from 360 and we're left with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Let's proceed to step 12:
When dividing 240 by 84, we get 2 with a remainder of 72.
The number 2 becomes the next digit in our result. 
Result so far: 10212.607142
If we subtract 168 from 240, we get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Let's proceed to step 13:
84 can be fit into 720 8 times, resulting in a remainder of 48.
Use 8 as the next digit of our solution. 
Result so far: 10212.6071428
If we take 672 away from 720, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 14:
84 can be fit into 480 5 times, resulting in a remainder of 60.
Use 5 as the next digit of our solution. 
Result so far: 10212.60714285
If we take 420 away from 480, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

In conclusion, the division gives 10212.60714285 with a balance of 6e-08.