We're dividing 125457 by 51 
Let's see how many times 51 fits into 125457.

Moving on to step 1:
The number 51 fits into 1 0 times, leaving a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Grab the next digit (2) from the dividend, add it to 1, then carry on: 12 / 51

Step 2:
51 can be fit into 12 0 times, resulting in 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.
Grab the next digit (5) from the dividend, add it to 12, then carry on: 125 / 51

Step 3:
51 goes into 125 2 times with a remainder of 23.
Use 2 as the next digit of our solution. 
Result so far: 2.0
Subtracting 102 from 125 leaves us with 23.
Include the next digit (4) from the dividend after 23, then repeat: 234 / 51

On to step 4:
The number 51 fits into 234 4 times, leaving a remainder of 30.
Use 4 as the next digit of our solution. 
Result so far: 24.0
If we subtract 204 from 234, we get 30.
Include the next digit (5) from the dividend after 30, then repeat: 305 / 51

Moving on to step 5:
When dividing 305 by 51, we get 5 with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 245.0
The remainder is 50 after subtracting 255 from 305.
Append the next digit (7) from the dividend to 50 and continue with: 507 / 51

Advancing to step 6:
The number 51 fits into 507 9 times, leaving a remainder of 48.
Record the quotient 9 as the next digit in the result. 
Result so far: 2459.0
If we subtract 459 from 507, we get 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 7:
If we divide 480 by 51, we get 9 and a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 2459.9
If we subtract 459 from 480, we get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 8:
51 can be fit into 210 4 times, resulting in a remainder of 6.
The next digit of our result is 4. 
Result so far: 2459.94
The remainder is 6 after subtracting 204 from 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Step 9:
51 goes into 60 1 times with a remainder of 9.
Use 1 as the next digit of our solution. 
Result so far: 2459.941
Subtract 51 from 60 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

On to step 10:
51 goes into 90 1 times with a remainder of 39.
Record the quotient 1 as the next digit in the result. 
Result so far: 2459.9411
If we take 51 away from 90, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

After the division, we end up with 2459.9411 and a remainder of 0.00039.