Let's divide 19909511 by 855
We want to figure out the number of times 19909511 can be divided by 855.

Moving on to step 1:
855 can be fit into 1 0 times, resulting in a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (9) from the dividend after 1, then repeat: 19 / 855

Moving on to step 2:
19 divided by 855 is 0 with a remainder of 19.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 19 leaves us with 19.
Fetch the next digit (9) from the dividend, attach it to 19 and continue: 199 / 855

Let's proceed to step 3:
When dividing 199 by 855, we get 0 with a remainder of 199.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 199 to get 199.
Include the next digit (0) from the dividend after 199, then repeat: 1990 / 855

On to step 4:
When dividing 1990 by 855, we get 2 with a remainder of 280.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 1710 from 1990 to get 280.
Fetch the next digit (9) from the dividend, attach it to 280 and continue: 2809 / 855

Advancing to step 5:
855 can be fit into 2809 3 times, resulting in a remainder of 244.
Put 3 as the next digit of the answer. 
Result so far: 23.0
The remainder is 244 after subtracting 2565 from 2809.
Include the next digit (5) from the dividend after 244, then repeat: 2445 / 855

On to step 6:
When dividing 2445 by 855, we get 2 with a remainder of 735.
Record the quotient 2 as the next digit in the result. 
Result so far: 232.0
If we subtract 1710 from 2445, we get 735.
Take the next digit (1) from the dividend and append it to 735, then repeat: 7351 / 855

Advancing to step 7:
7351 divided by 855 is 8 with a remainder of 511.
Write down 8 as next digit of the result. 
Result so far: 2328.0
The remainder is 511 after subtracting 6840 from 7351.
Append the next digit (1) from the dividend to 511 and continue with: 5111 / 855

On to step 8:
5111 divided by 855 is 5 with a remainder of 836.
Write down 5 as next digit of the result. 
Result so far: 23285.0
The remainder is 836 after subtracting 4275 from 5111.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8360, and continue the process.

Advancing to step 9:
When dividing 8360 by 855, we get 9 with a remainder of 665.
Use 9 as the next digit of our solution. 
Result so far: 23285.9
Deduct 7695 from 8360 and we're left with 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

Going ahead to step 10:
When dividing 6650 by 855, we get 7 with a remainder of 665.
Record the quotient 7 as the next digit in the result. 
Result so far: 23285.97
If we subtract 5985 from 6650, we get 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

On to step 11:
When dividing 6650 by 855, we get 7 with a remainder of 665.
The number 7 becomes the next digit in our result. 
Result so far: 23285.977
If we take 5985 away from 6650, we end up with 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

The final result is 23285.977 with a remainder of 0.0665.