Let's divide 138966 by 6
Let's see how many times 6 fits into 138966.

On to step 1:
The number 6 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (3) from the dividend and append it to 1, then repeat: 13 / 6

Let's proceed to step 2:
6 can be fit into 13 2 times, resulting in a remainder of 1.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtract 12 from 13 to get 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 6

Advancing to step 3:
6 goes into 18 3 times with a remainder of 0.
Record the quotient 3 as the next digit in the result. 
Result so far: 23.0
Deduct 18 from 18 and we're left with 0.
Append the next digit (9) from the dividend to 0 and continue with: 9 / 6

On to step 4:
The number 6 fits into 9 1 times, leaving a remainder of 3.
Use 1 as the next digit of our solution. 
Result so far: 231.0
If we take 6 away from 9, we end up with 3.
Append the next digit (6) from the dividend to 3 and continue with: 36 / 6

Moving on to step 5:
6 can be fit into 36 6 times, resulting in a remainder of 0.
The number 6 becomes the next digit in our result. 
Result so far: 2316.0
If we take 36 away from 36, we end up with 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 6

Let's proceed to step 6:
6 divided by 6 is 1 with a remainder of 0.
Record the quotient 1 as the next digit in the result. 
Result so far: 23161.0
Deduct 6 from 6 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Moving on to step 7:
6 can be fit into 0 0 times, resulting in a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 23161.0
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Let's proceed to step 8:
6 can be fit into 0 0 times, resulting in a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 23161.0
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

In conclusion, the division gives 23161.0 with a balance of 0.0.