We look at the division of 3138966 by 156 
Our goal is to divide 3138966 by 156.

On to step 1:
The number 156 fits into 3 0 times, leaving a remainder of 3.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Take the next digit (1) from the dividend and append it to 3, then repeat: 31 / 156

Advancing to step 2:
31 divided by 156 is 0 with a remainder of 31.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 31, we get 31.
Include the next digit (3) from the dividend after 31, then repeat: 313 / 156

Moving on to step 3:
156 goes into 313 2 times with a remainder of 1.
Write down 2 as next digit of the result. 
Result so far: 2.0
Subtracting 312 from 313 leaves us with 1.
Take the next digit (8) from the dividend and append it to 1, then repeat: 18 / 156

On to step 4:
The number 156 fits into 18 0 times, leaving a remainder of 18.
The next digit of our result is 0. 
Result so far: 20.0
Subtract 0 from 18 to get 18.
Grab the next digit (9) from the dividend, add it to 18, then carry on: 189 / 156

Moving on to step 5:
189 divided by 156 is 1 with a remainder of 33.
The next digit of our result is 1. 
Result so far: 201.0
Subtract 156 from 189 to get 33.
Fetch the next digit (6) from the dividend, attach it to 33 and continue: 336 / 156

On to step 6:
156 can be fit into 336 2 times, resulting in a remainder of 24.
The next digit of our result is 2. 
Result so far: 2012.0
Subtract 312 from 336 to get 24.
Include the next digit (6) from the dividend after 24, then repeat: 246 / 156

Going ahead to step 7:
246 divided by 156 is 1 with a remainder of 90.
Put 1 as the next digit of the answer. 
Result so far: 20121.0
If we take 156 away from 246, we end up with 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

On to step 8:
If we divide 900 by 156, we get 5 and a remainder of 120.
Write down 5 as next digit of the result. 
Result so far: 20121.5
The remainder is 120 after subtracting 780 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 9:
If we divide 1200 by 156, we get 7 and a remainder of 108.
The number 7 becomes the next digit in our result. 
Result so far: 20121.57
If we take 1092 away from 1200, we end up with 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

On to step 10:
If we divide 1080 by 156, we get 6 and a remainder of 144.
Put 6 as the next digit of the answer. 
Result so far: 20121.576
If we take 936 away from 1080, we end up with 144.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1440, and continue the process.

Let's proceed to step 11:
156 goes into 1440 9 times with a remainder of 36.
Record the quotient 9 as the next digit in the result. 
Result so far: 20121.5769
The remainder is 36 after subtracting 1404 from 1440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Going ahead to step 12:
The number 156 fits into 360 2 times, leaving a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 20121.57692
If we take 312 away from 360, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 13:
The number 156 fits into 480 3 times, leaving a remainder of 12.
Write down 3 as next digit of the result. 
Result so far: 20121.576923
Subtracting 468 from 480 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 14:
When dividing 120 by 156, we get 0 with a remainder of 120.
Use 0 as the next digit of our solution. 
Result so far: 20121.576923
Subtract 0 from 120 to get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Step 15:
When dividing 1200 by 156, we get 7 with a remainder of 108.
Use 7 as the next digit of our solution. 
Result so far: 20121.57692307
Subtract 1092 from 1200 to get 108.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1080, and continue the process.

The final outcome is 20121.57692307, with a leftover of 1.08e-07.