We're dividing 10388778 by 855 
We're looking to find how many times 855 goes into 10388778.

Step 1:
855 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (0) from the dividend, add it to 1, then carry on: 10 / 855

Step 2:
The number 855 fits into 10 0 times, leaving a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 10 after subtracting 0 from 10.
Grab the next digit (3) from the dividend, add it to 10, then carry on: 103 / 855

Going ahead to step 3:
The number 855 fits into 103 0 times, leaving a remainder of 103.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 103 and we're left with 103.
Fetch the next digit (8) from the dividend, attach it to 103 and continue: 1038 / 855

Step 4:
When dividing 1038 by 855, we get 1 with a remainder of 183.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 183 after subtracting 855 from 1038.
Grab the next digit (8) from the dividend, add it to 183, then carry on: 1838 / 855

Advancing to step 5:
855 can be fit into 1838 2 times, resulting in a remainder of 128.
Put 2 as the next digit of the answer. 
Result so far: 12.0
If we subtract 1710 from 1838, we get 128.
Append the next digit (7) from the dividend to 128 and continue with: 1287 / 855

On to step 6:
When dividing 1287 by 855, we get 1 with a remainder of 432.
Record the quotient 1 as the next digit in the result. 
Result so far: 121.0
If we subtract 855 from 1287, we get 432.
Append the next digit (7) from the dividend to 432 and continue with: 4327 / 855

Going ahead to step 7:
If we divide 4327 by 855, we get 5 and a remainder of 52.
Record the quotient 5 as the next digit in the result. 
Result so far: 1215.0
If we take 4275 away from 4327, we end up with 52.
Append the next digit (8) from the dividend to 52 and continue with: 528 / 855

Going ahead to step 8:
855 goes into 528 0 times with a remainder of 528.
The next digit of our result is 0. 
Result so far: 12150.0
If we take 0 away from 528, we end up with 528.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5280, and continue the process.

Moving on to step 9:
5280 divided by 855 is 6 with a remainder of 150.
The number 6 becomes the next digit in our result. 
Result so far: 12150.6
Subtract 5130 from 5280 to get 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

On to step 10:
When dividing 1500 by 855, we get 1 with a remainder of 645.
Write down 1 as next digit of the result. 
Result so far: 12150.61
Deduct 855 from 1500 and we're left with 645.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6450, and continue the process.

Going ahead to step 11:
6450 divided by 855 is 7 with a remainder of 465.
Put 7 as the next digit of the answer. 
Result so far: 12150.617
Deduct 5985 from 6450 and we're left with 465.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4650, and continue the process.

On to step 12:
4650 divided by 855 is 5 with a remainder of 375.
Write down 5 as next digit of the result. 
Result so far: 12150.6175
If we subtract 4275 from 4650, we get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Going ahead to step 13:
855 can be fit into 3750 4 times, resulting in a remainder of 330.
Write down 4 as next digit of the result. 
Result so far: 12150.61754
Subtracting 3420 from 3750 leaves us with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 14:
The number 855 fits into 3300 3 times, leaving a remainder of 735.
Put 3 as the next digit of the answer. 
Result so far: 12150.617543
Subtracting 2565 from 3300 leaves us with 735.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7350, and continue the process.

On to step 15:
The number 855 fits into 7350 8 times, leaving a remainder of 510.
The number 8 becomes the next digit in our result. 
Result so far: 12150.6175438
If we subtract 6840 from 7350, we get 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5100, and continue the process.

Going ahead to step 16:
855 can be fit into 5100 5 times, resulting in a remainder of 825.
Put 5 as the next digit of the answer. 
Result so far: 12150.61754385
Subtracting 4275 from 5100 leaves us with 825.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8250, and continue the process.

The final result is 12150.61754385 with a remainder of 8.25e-07.