We're dividing 25154184 by 421 
Our goal is to divide 25154184 by 421.

Step 1:
421 goes into 2 0 times with a remainder of 2.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Grab the next digit (5) from the dividend, add it to 2, then carry on: 25 / 421

Going ahead to step 2:
The number 421 fits into 25 0 times, leaving a remainder of 25.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 25 to get 25.
Take the next digit (1) from the dividend and append it to 25, then repeat: 251 / 421

Advancing to step 3:
If we divide 251 by 421, we get 0 and a remainder of 251.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 251 to get 251.
Fetch the next digit (5) from the dividend, attach it to 251 and continue: 2515 / 421

Let's proceed to step 4:
The number 421 fits into 2515 5 times, leaving a remainder of 410.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
Subtract 2105 from 2515 to get 410.
Include the next digit (4) from the dividend after 410, then repeat: 4104 / 421

Let's proceed to step 5:
The number 421 fits into 4104 9 times, leaving a remainder of 315.
Use 9 as the next digit of our solution. 
Result so far: 59.0
Subtract 3789 from 4104 to get 315.
Fetch the next digit (1) from the dividend, attach it to 315 and continue: 3151 / 421

Moving on to step 6:
3151 divided by 421 is 7 with a remainder of 204.
Record the quotient 7 as the next digit in the result. 
Result so far: 597.0
Subtract 2947 from 3151 to get 204.
Append the next digit (8) from the dividend to 204 and continue with: 2048 / 421

On to step 7:
The number 421 fits into 2048 4 times, leaving a remainder of 364.
Put 4 as the next digit of the answer. 
Result so far: 5974.0
If we take 1684 away from 2048, we end up with 364.
Bring next digit (4) of the dividend behind the 364 and repeat the process: 3644 / 421

Moving on to step 8:
The number 421 fits into 3644 8 times, leaving a remainder of 276.
The number 8 becomes the next digit in our result. 
Result so far: 59748.0
If we subtract 3368 from 3644, we get 276.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2760, and continue the process.

Moving on to step 9:
The number 421 fits into 2760 6 times, leaving a remainder of 234.
Use 6 as the next digit of our solution. 
Result so far: 59748.6
If we take 2526 away from 2760, we end up with 234.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2340, and continue the process.

Step 10:
2340 divided by 421 is 5 with a remainder of 235.
Record the quotient 5 as the next digit in the result. 
Result so far: 59748.65
Deduct 2105 from 2340 and we're left with 235.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2350, and continue the process.

Advancing to step 11:
2350 divided by 421 is 5 with a remainder of 245.
Write down 5 as next digit of the result. 
Result so far: 59748.655
If we take 2105 away from 2350, we end up with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

In conclusion, the division gives 59748.655 with a balance of 0.0245.