We look at the division of 250721 by 12 
We want to figure out the number of times 250721 can be divided by 12.

Let's proceed to step 1:
2 divided by 12 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Take the next digit (5) from the dividend and append it to 2, then repeat: 25 / 12

Going ahead to step 2:
If we divide 25 by 12, we get 2 and a remainder of 1.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 24 from 25 and we're left with 1.
Bring next digit (0) of the dividend behind the 1 and repeat the process: 10 / 12

On to step 3:
10 divided by 12 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 20.0
If we take 0 away from 10, we end up with 10.
Bring next digit (7) of the dividend behind the 10 and repeat the process: 107 / 12

Advancing to step 4:
The number 12 fits into 107 8 times, leaving a remainder of 11.
Put 8 as the next digit of the answer. 
Result so far: 208.0
Deduct 96 from 107 and we're left with 11.
Take the next digit (2) from the dividend and append it to 11, then repeat: 112 / 12

On to step 5:
12 goes into 112 9 times with a remainder of 4.
The next digit of our result is 9. 
Result so far: 2089.0
Deduct 108 from 112 and we're left with 4.
Grab the next digit (1) from the dividend, add it to 4, then carry on: 41 / 12

Let's proceed to step 6:
12 goes into 41 3 times with a remainder of 5.
Record the quotient 3 as the next digit in the result. 
Result so far: 20893.0
If we take 36 away from 41, we end up with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 7:
12 goes into 50 4 times with a remainder of 2.
Use 4 as the next digit of our solution. 
Result so far: 20893.4
Subtracting 48 from 50 leaves us with 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
The number 12 fits into 20 1 times, leaving a remainder of 8.
Record the quotient 1 as the next digit in the result. 
Result so far: 20893.41
Deduct 12 from 20 and we're left with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

On to step 9:
12 goes into 80 6 times with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 20893.416
Subtracting 72 from 80 leaves us with 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Going ahead to step 10:
When dividing 80 by 12, we get 6 with a remainder of 8.
Record the quotient 6 as the next digit in the result. 
Result so far: 20893.4166
The remainder is 8 after subtracting 72 from 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Our division results in 20893.4166 with a remaining 8e-05.