We look at the division of 15974739 by 855 
We're looking to find how many times 855 goes into 15974739.

On to step 1:
855 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 855

Going ahead to step 2:
855 goes into 15 0 times with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Append the next digit (9) from the dividend to 15 and continue with: 159 / 855

Moving on to step 3:
159 divided by 855 is 0 with a remainder of 159.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 159 to get 159.
Bring next digit (7) of the dividend behind the 159 and repeat the process: 1597 / 855

Going ahead to step 4:
When dividing 1597 by 855, we get 1 with a remainder of 742.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 855 from 1597, we get 742.
Grab the next digit (4) from the dividend, add it to 742, then carry on: 7424 / 855

Going ahead to step 5:
855 goes into 7424 8 times with a remainder of 584.
Use 8 as the next digit of our solution. 
Result so far: 18.0
Deduct 6840 from 7424 and we're left with 584.
Bring next digit (7) of the dividend behind the 584 and repeat the process: 5847 / 855

Let's proceed to step 6:
When dividing 5847 by 855, we get 6 with a remainder of 717.
Put 6 as the next digit of the answer. 
Result so far: 186.0
Deduct 5130 from 5847 and we're left with 717.
Append the next digit (3) from the dividend to 717 and continue with: 7173 / 855

Advancing to step 7:
If we divide 7173 by 855, we get 8 and a remainder of 333.
Write down 8 as next digit of the result. 
Result so far: 1868.0
Subtracting 6840 from 7173 leaves us with 333.
Grab the next digit (9) from the dividend, add it to 333, then carry on: 3339 / 855

Step 8:
3339 divided by 855 is 3 with a remainder of 774.
Use 3 as the next digit of our solution. 
Result so far: 18683.0
Subtracting 2565 from 3339 leaves us with 774.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7740, and continue the process.

Let's proceed to step 9:
If we divide 7740 by 855, we get 9 and a remainder of 45.
Use 9 as the next digit of our solution. 
Result so far: 18683.9
If we subtract 7695 from 7740, we get 45.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Step 10:
855 can be fit into 450 0 times, resulting in a remainder of 450.
The next digit of our result is 0. 
Result so far: 18683.9
Subtracting 0 from 450 leaves us with 450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4500, and continue the process.

Step 11:
4500 divided by 855 is 5 with a remainder of 225.
Put 5 as the next digit of the answer. 
Result so far: 18683.905
Subtract 4275 from 4500 to get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Moving on to step 12:
The number 855 fits into 2250 2 times, leaving a remainder of 540.
The next digit of our result is 2. 
Result so far: 18683.9052
If we subtract 1710 from 2250, we get 540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5400, and continue the process.

Step 13:
5400 divided by 855 is 6 with a remainder of 270.
Put 6 as the next digit of the answer. 
Result so far: 18683.90526
Subtracting 5130 from 5400 leaves us with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

Going ahead to step 14:
855 goes into 2700 3 times with a remainder of 135.
Write down 3 as next digit of the result. 
Result so far: 18683.905263
Subtract 2565 from 2700 to get 135.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1350, and continue the process.

Moving on to step 15:
1350 divided by 855 is 1 with a remainder of 495.
The number 1 becomes the next digit in our result. 
Result so far: 18683.9052631
Deduct 855 from 1350 and we're left with 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Going ahead to step 16:
855 can be fit into 4950 5 times, resulting in a remainder of 675.
The number 5 becomes the next digit in our result. 
Result so far: 18683.90526315
Subtracting 4275 from 4950 leaves us with 675.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6750, and continue the process.

The final result is 18683.90526315 with a remainder of 6.75e-07.