Let's divide 12258714 by 454
We're looking to find how many times 454 goes into 12258714.

Step 1:
1 divided by 454 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Fetch the next digit (2) from the dividend, attach it to 1 and continue: 12 / 454

Going ahead to step 2:
454 goes into 12 0 times with a remainder of 12.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 12, we get 12.
Fetch the next digit (2) from the dividend, attach it to 12 and continue: 122 / 454

On to step 3:
When dividing 122 by 454, we get 0 with a remainder of 122.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 122 leaves us with 122.
Take the next digit (5) from the dividend and append it to 122, then repeat: 1225 / 454

Advancing to step 4:
When dividing 1225 by 454, we get 2 with a remainder of 317.
Write down 2 as next digit of the result. 
Result so far: 2.0
If we subtract 908 from 1225, we get 317.
Bring next digit (8) of the dividend behind the 317 and repeat the process: 3178 / 454

Advancing to step 5:
If we divide 3178 by 454, we get 7 and a remainder of 0.
Write down 7 as next digit of the result. 
Result so far: 27.0
Deduct 3178 from 3178 and we're left with 0.
Bring next digit (7) of the dividend behind the 0 and repeat the process: 7 / 454

Let's proceed to step 6:
454 can be fit into 7 0 times, resulting in a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 270.0
Subtracting 0 from 7 leaves us with 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 454

Step 7:
71 divided by 454 is 0 with a remainder of 71.
The next digit of our result is 0. 
Result so far: 2700.0
The remainder is 71 after subtracting 0 from 71.
Bring next digit (4) of the dividend behind the 71 and repeat the process: 714 / 454

Going ahead to step 8:
714 divided by 454 is 1 with a remainder of 260.
Write down 1 as next digit of the result. 
Result so far: 27001.0
If we subtract 454 from 714, we get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Going ahead to step 9:
454 can be fit into 2600 5 times, resulting in a remainder of 330.
Write down 5 as next digit of the result. 
Result so far: 27001.5
If we subtract 2270 from 2600, we get 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 10:
When dividing 3300 by 454, we get 7 with a remainder of 122.
Record the quotient 7 as the next digit in the result. 
Result so far: 27001.57
If we subtract 3178 from 3300, we get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Advancing to step 11:
The number 454 fits into 1220 2 times, leaving a remainder of 312.
Put 2 as the next digit of the answer. 
Result so far: 27001.572
Subtract 908 from 1220 to get 312.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3120, and continue the process.

On to step 12:
If we divide 3120 by 454, we get 6 and a remainder of 396.
Use 6 as the next digit of our solution. 
Result so far: 27001.5726
If we subtract 2724 from 3120, we get 396.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3960, and continue the process.

Going ahead to step 13:
3960 divided by 454 is 8 with a remainder of 328.
Record the quotient 8 as the next digit in the result. 
Result so far: 27001.57268
If we subtract 3632 from 3960, we get 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

On to step 14:
If we divide 3280 by 454, we get 7 and a remainder of 102.
Record the quotient 7 as the next digit in the result. 
Result so far: 27001.572687
If we subtract 3178 from 3280, we get 102.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1020, and continue the process.

Going ahead to step 15:
If we divide 1020 by 454, we get 2 and a remainder of 112.
Write down 2 as next digit of the result. 
Result so far: 27001.5726872
The remainder is 112 after subtracting 908 from 1020.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Step 16:
454 can be fit into 1120 2 times, resulting in a remainder of 212.
Write down 2 as next digit of the result. 
Result so far: 27001.57268722
If we subtract 908 from 1120, we get 212.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2120, and continue the process.

The final result is 27001.57268722 with a remainder of 2.12e-07.