We're dividing 25251257 by 120 
We want to divide 25251257 by 120.

On to step 1:
2 divided by 120 is 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 120

On to step 2:
25 divided by 120 is 0 with a remainder of 25.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 25 after subtracting 0 from 25.
Append the next digit (2) from the dividend to 25 and continue with: 252 / 120

Going ahead to step 3:
252 divided by 120 is 2 with a remainder of 12.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
Subtracting 240 from 252 leaves us with 12.
Append the next digit (5) from the dividend to 12 and continue with: 125 / 120

Moving on to step 4:
125 divided by 120 is 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Deduct 120 from 125 and we're left with 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 120

Advancing to step 5:
If we divide 51 by 120, we get 0 and a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 210.0
If we take 0 away from 51, we end up with 51.
Include the next digit (2) from the dividend after 51, then repeat: 512 / 120

Step 6:
512 divided by 120 is 4 with a remainder of 32.
Record the quotient 4 as the next digit in the result. 
Result so far: 2104.0
If we take 480 away from 512, we end up with 32.
Fetch the next digit (5) from the dividend, attach it to 32 and continue: 325 / 120

On to step 7:
120 can be fit into 325 2 times, resulting in a remainder of 85.
The number 2 becomes the next digit in our result. 
Result so far: 21042.0
Deduct 240 from 325 and we're left with 85.
Append the next digit (7) from the dividend to 85 and continue with: 857 / 120

On to step 8:
120 goes into 857 7 times with a remainder of 17.
Record the quotient 7 as the next digit in the result. 
Result so far: 210427.0
Deduct 840 from 857 and we're left with 17.
Since there are no more digits in the dividend, we add a zero to the remainder making it 170, and continue the process.

Moving on to step 9:
120 can be fit into 170 1 times, resulting in a remainder of 50.
Write down 1 as next digit of the result. 
Result so far: 210427.1
Subtracting 120 from 170 leaves us with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Advancing to step 10:
The number 120 fits into 500 4 times, leaving a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 210427.14
Subtract 480 from 500 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Let's proceed to step 11:
The number 120 fits into 200 1 times, leaving a remainder of 80.
Record the quotient 1 as the next digit in the result. 
Result so far: 210427.141
Subtract 120 from 200 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Let's proceed to step 12:
800 divided by 120 is 6 with a remainder of 80.
The next digit of our result is 6. 
Result so far: 210427.1416
If we take 720 away from 800, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Advancing to step 13:
120 goes into 800 6 times with a remainder of 80.
Use 6 as the next digit of our solution. 
Result so far: 210427.14166
Subtracting 720 from 800 leaves us with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

The final outcome is 210427.14166, with a leftover of 8e-05.