We look at the division of 20412155 by 856 
We're looking to find how many times 856 goes into 20412155.

Let's proceed to step 1:
856 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 856

Let's proceed to step 2:
856 goes into 20 0 times with a remainder of 20.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Grab the next digit (4) from the dividend, add it to 20, then carry on: 204 / 856

On to step 3:
If we divide 204 by 856, we get 0 and a remainder of 204.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 204, we get 204.
Fetch the next digit (1) from the dividend, attach it to 204 and continue: 2041 / 856

Advancing to step 4:
2041 divided by 856 is 2 with a remainder of 329.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we take 1712 away from 2041, we end up with 329.
Include the next digit (2) from the dividend after 329, then repeat: 3292 / 856

Moving on to step 5:
The number 856 fits into 3292 3 times, leaving a remainder of 724.
Use 3 as the next digit of our solution. 
Result so far: 23.0
If we take 2568 away from 3292, we end up with 724.
Append the next digit (1) from the dividend to 724 and continue with: 7241 / 856

Moving on to step 6:
856 can be fit into 7241 8 times, resulting in a remainder of 393.
Write down 8 as next digit of the result. 
Result so far: 238.0
Subtract 6848 from 7241 to get 393.
Fetch the next digit (5) from the dividend, attach it to 393 and continue: 3935 / 856

On to step 7:
856 goes into 3935 4 times with a remainder of 511.
Use 4 as the next digit of our solution. 
Result so far: 2384.0
Subtract 3424 from 3935 to get 511.
Include the next digit (5) from the dividend after 511, then repeat: 5115 / 856

Step 8:
If we divide 5115 by 856, we get 5 and a remainder of 835.
The number 5 becomes the next digit in our result. 
Result so far: 23845.0
If we take 4280 away from 5115, we end up with 835.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8350, and continue the process.

Step 9:
856 can be fit into 8350 9 times, resulting in a remainder of 646.
Put 9 as the next digit of the answer. 
Result so far: 23845.9
Subtract 7704 from 8350 to get 646.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6460, and continue the process.

Let's proceed to step 10:
The number 856 fits into 6460 7 times, leaving a remainder of 468.
Use 7 as the next digit of our solution. 
Result so far: 23845.97
Deduct 5992 from 6460 and we're left with 468.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4680, and continue the process.

Let's proceed to step 11:
4680 divided by 856 is 5 with a remainder of 400.
The number 5 becomes the next digit in our result. 
Result so far: 23845.975
If we take 4280 away from 4680, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

Step 12:
856 can be fit into 4000 4 times, resulting in a remainder of 576.
The next digit of our result is 4. 
Result so far: 23845.9754
Deduct 3424 from 4000 and we're left with 576.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5760, and continue the process.

Advancing to step 13:
856 can be fit into 5760 6 times, resulting in a remainder of 624.
Use 6 as the next digit of our solution. 
Result so far: 23845.97546
Subtract 5136 from 5760 to get 624.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6240, and continue the process.

On to step 14:
856 goes into 6240 7 times with a remainder of 248.
The next digit of our result is 7. 
Result so far: 23845.975467
The remainder is 248 after subtracting 5992 from 6240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

On to step 15:
856 goes into 2480 2 times with a remainder of 768.
Write down 2 as next digit of the result. 
Result so far: 23845.9754672
If we take 1712 away from 2480, we end up with 768.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7680, and continue the process.

Let's proceed to step 16:
The number 856 fits into 7680 8 times, leaving a remainder of 832.
Put 8 as the next digit of the answer. 
Result so far: 23845.97546728
The remainder is 832 after subtracting 6848 from 7680.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8320, and continue the process.

The final outcome is 23845.97546728, with a leftover of 8.32e-07.