We're dividing 21231061 by 859 
We're looking to find how many times 859 goes into 21231061.

Step 1:
859 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (1) from the dividend, attach it to 2 and continue: 21 / 859

On to step 2:
859 goes into 21 0 times with a remainder of 21.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 21, we get 21.
Grab the next digit (2) from the dividend, add it to 21, then carry on: 212 / 859

Moving on to step 3:
If we divide 212 by 859, we get 0 and a remainder of 212.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 212, we end up with 212.
Bring next digit (3) of the dividend behind the 212 and repeat the process: 2123 / 859

Going ahead to step 4:
2123 divided by 859 is 2 with a remainder of 405.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 1718 from 2123 and we're left with 405.
Include the next digit (1) from the dividend after 405, then repeat: 4051 / 859

Advancing to step 5:
If we divide 4051 by 859, we get 4 and a remainder of 615.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
The remainder is 615 after subtracting 3436 from 4051.
Grab the next digit (0) from the dividend, add it to 615, then carry on: 6150 / 859

On to step 6:
6150 divided by 859 is 7 with a remainder of 137.
Use 7 as the next digit of our solution. 
Result so far: 247.0
The remainder is 137 after subtracting 6013 from 6150.
Grab the next digit (6) from the dividend, add it to 137, then carry on: 1376 / 859

Moving on to step 7:
859 goes into 1376 1 times with a remainder of 517.
Put 1 as the next digit of the answer. 
Result so far: 2471.0
Deduct 859 from 1376 and we're left with 517.
Fetch the next digit (1) from the dividend, attach it to 517 and continue: 5171 / 859

Advancing to step 8:
When dividing 5171 by 859, we get 6 with a remainder of 17.
Write down 6 as next digit of the result. 
Result so far: 24716.0
If we take 5154 away from 5171, we end up with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Let's proceed to step 9:
859 goes into 170 0 times with a remainder of 170.
Write down 0 as next digit of the result. 
Result so far: 24716.0
If we take 0 away from 170, we end up with 170.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1700, and continue the process.

Moving on to step 10:
1700 divided by 859 is 1 with a remainder of 841.
Use 1 as the next digit of our solution. 
Result so far: 24716.01
If we take 859 away from 1700, we end up with 841.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8410, and continue the process.

Step 11:
When dividing 8410 by 859, we get 9 with a remainder of 679.
Use 9 as the next digit of our solution. 
Result so far: 24716.019
Deduct 7731 from 8410 and we're left with 679.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6790, and continue the process.

Let's proceed to step 12:
If we divide 6790 by 859, we get 7 and a remainder of 777.
Record the quotient 7 as the next digit in the result. 
Result so far: 24716.0197
If we take 6013 away from 6790, we end up with 777.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7770, and continue the process.

On to step 13:
If we divide 7770 by 859, we get 9 and a remainder of 39.
The next digit of our result is 9. 
Result so far: 24716.01979
If we subtract 7731 from 7770, we get 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Advancing to step 14:
If we divide 390 by 859, we get 0 and a remainder of 390.
Record the quotient 0 as the next digit in the result. 
Result so far: 24716.01979
If we take 0 away from 390, we end up with 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Advancing to step 15:
The number 859 fits into 3900 4 times, leaving a remainder of 464.
The number 4 becomes the next digit in our result. 
Result so far: 24716.0197904
Subtracting 3436 from 3900 leaves us with 464.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4640, and continue the process.

Going ahead to step 16:
The number 859 fits into 4640 5 times, leaving a remainder of 345.
The next digit of our result is 5. 
Result so far: 24716.01979045
If we take 4295 away from 4640, we end up with 345.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3450, and continue the process.

The quotient of the division is 24716.01979045, and the remainder is 3.45e-07.