We look at the division of 250778 by 12 
We're looking to find how many times 12 goes into 250778.

Step 1:
When dividing 2 by 12, we get 0 with a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 12

Going ahead to step 2:
The number 12 fits into 25 2 times, leaving a remainder of 1.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we take 24 away from 25, we end up with 1.
Include the next digit (0) from the dividend after 1, then repeat: 10 / 12

Advancing to step 3:
When dividing 10 by 12, we get 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 20.0
If we subtract 0 from 10, we get 10.
Include the next digit (7) from the dividend after 10, then repeat: 107 / 12

On to step 4:
When dividing 107 by 12, we get 8 with a remainder of 11.
The number 8 becomes the next digit in our result. 
Result so far: 208.0
The remainder is 11 after subtracting 96 from 107.
Grab the next digit (7) from the dividend, add it to 11, then carry on: 117 / 12

Moving on to step 5:
When dividing 117 by 12, we get 9 with a remainder of 9.
Record the quotient 9 as the next digit in the result. 
Result so far: 2089.0
If we take 108 away from 117, we end up with 9.
Bring next digit (8) of the dividend behind the 9 and repeat the process: 98 / 12

On to step 6:
98 divided by 12 is 8 with a remainder of 2.
The next digit of our result is 8. 
Result so far: 20898.0
If we take 96 away from 98, we end up 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.

On to step 7:
If we divide 20 by 12, we get 1 and a remainder of 8.
Use 1 as the next digit of our solution. 
Result so far: 20898.1
If we subtract 12 from 20, we get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 8:
80 divided by 12 is 6 with a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 20898.16
Subtract 72 from 80 to get 8.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

Step 9:
80 divided by 12 is 6 with a remainder of 8.
Put 6 as the next digit of the answer. 
Result so far: 20898.166
Deduct 72 from 80 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.

After the division, we end up with 20898.166 and a remainder of 0.0008.