Let's divide 21395071 by 858
We want to divide 21395071 by 858.

Let's proceed to step 1:
2 divided by 858 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 858

Step 2:
The number 858 fits into 21 0 times, leaving a remainder of 21.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 21 leaves us with 21.
Fetch the next digit (3) from the dividend, attach it to 21 and continue: 213 / 858

Advancing to step 3:
858 goes into 213 0 times with a remainder of 213.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 213 and we're left with 213.
Take the next digit (9) from the dividend and append it to 213, then repeat: 2139 / 858

Moving on to step 4:
2139 divided by 858 is 2 with a remainder of 423.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
If we take 1716 away from 2139, we end up with 423.
Include the next digit (5) from the dividend after 423, then repeat: 4235 / 858

Let's proceed to step 5:
When dividing 4235 by 858, we get 4 with a remainder of 803.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Subtract 3432 from 4235 to get 803.
Take the next digit (0) from the dividend and append it to 803, then repeat: 8030 / 858

Let's proceed to step 6:
The number 858 fits into 8030 9 times, leaving a remainder of 308.
Put 9 as the next digit of the answer. 
Result so far: 249.0
If we subtract 7722 from 8030, we get 308.
Take the next digit (7) from the dividend and append it to 308, then repeat: 3087 / 858

Moving on to step 7:
858 goes into 3087 3 times with a remainder of 513.
The number 3 becomes the next digit in our result. 
Result so far: 2493.0
Subtract 2574 from 3087 to get 513.
Append the next digit (1) from the dividend to 513 and continue with: 5131 / 858

Advancing to step 8:
5131 divided by 858 is 5 with a remainder of 841.
Use 5 as the next digit of our solution. 
Result so far: 24935.0
The remainder is 841 after subtracting 4290 from 5131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8410, and continue the process.

Let's proceed to step 9:
If we divide 8410 by 858, we get 9 and a remainder of 688.
The next digit of our result is 9. 
Result so far: 24935.9
If we take 7722 away from 8410, we end up with 688.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

Going ahead to step 10:
858 can be fit into 6880 8 times, resulting in a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 24935.98
Deduct 6864 from 6880 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 11:
160 divided by 858 is 0 with a remainder of 160.
Use 0 as the next digit of our solution. 
Result so far: 24935.98
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 12:
If we divide 1600 by 858, we get 1 and a remainder of 742.
The number 1 becomes the next digit in our result. 
Result so far: 24935.9801
If we subtract 858 from 1600, we get 742.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7420, and continue the process.

Moving on to step 13:
When dividing 7420 by 858, we get 8 with a remainder of 556.
Write down 8 as next digit of the result. 
Result so far: 24935.98018
If we take 6864 away from 7420, we end up with 556.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5560, and continue the process.

Advancing to step 14:
5560 divided by 858 is 6 with a remainder of 412.
Write down 6 as next digit of the result. 
Result so far: 24935.980186
If we take 5148 away from 5560, we end up with 412.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4120, and continue the process.

Advancing to step 15:
858 goes into 4120 4 times with a remainder of 688.
Put 4 as the next digit of the answer. 
Result so far: 24935.9801864
The remainder is 688 after subtracting 3432 from 4120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6880, and continue the process.

Going ahead to step 16:
858 can be fit into 6880 8 times, resulting in a remainder of 16.
Use 8 as the next digit of our solution. 
Result so far: 24935.98018648
If we subtract 6864 from 6880, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

In conclusion, the division gives 24935.98018648 with a balance of 1.6e-08.