We look at the division of 15454186 by 641 
Let's see how many times 641 fits into 15454186.

Step 1:
The number 641 fits into 1 0 times, leaving a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 641

Let's proceed to step 2:
15 divided by 641 is 0 with a remainder of 15.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Bring next digit (4) of the dividend behind the 15 and repeat the process: 154 / 641

Moving on to step 3:
641 goes into 154 0 times with a remainder of 154.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 154 after subtracting 0 from 154.
Take the next digit (5) from the dividend and append it to 154, then repeat: 1545 / 641

Moving on to step 4:
641 goes into 1545 2 times with a remainder of 263.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 1282 from 1545 and we're left with 263.
Bring next digit (4) of the dividend behind the 263 and repeat the process: 2634 / 641

On to step 5:
641 can be fit into 2634 4 times, resulting in a remainder of 70.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Deduct 2564 from 2634 and we're left with 70.
Grab the next digit (1) from the dividend, add it to 70, then carry on: 701 / 641

Going ahead to step 6:
701 divided by 641 is 1 with a remainder of 60.
The next digit of our result is 1. 
Result so far: 241.0
If we take 641 away from 701, we end up with 60.
Fetch the next digit (8) from the dividend, attach it to 60 and continue: 608 / 641

Let's proceed to step 7:
641 goes into 608 0 times with a remainder of 608.
Record the quotient 0 as the next digit in the result. 
Result so far: 2410.0
If we subtract 0 from 608, we get 608.
Bring next digit (6) of the dividend behind the 608 and repeat the process: 6086 / 641

Let's proceed to step 8:
If we divide 6086 by 641, we get 9 and a remainder of 317.
Write down 9 as next digit of the result. 
Result so far: 24109.0
If we subtract 5769 from 6086, we get 317.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3170, and continue the process.

On to step 9:
The number 641 fits into 3170 4 times, leaving a remainder of 606.
The number 4 becomes the next digit in our result. 
Result so far: 24109.4
If we subtract 2564 from 3170, we get 606.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6060, and continue the process.

Advancing to step 10:
641 can be fit into 6060 9 times, resulting in a remainder of 291.
Put 9 as the next digit of the answer. 
Result so far: 24109.49
If we take 5769 away from 6060, we end up with 291.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2910, and continue the process.

On to step 11:
The number 641 fits into 2910 4 times, leaving a remainder of 346.
The number 4 becomes the next digit in our result. 
Result so far: 24109.494
If we take 2564 away from 2910, we end up with 346.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3460, and continue the process.

Advancing to step 12:
641 goes into 3460 5 times with a remainder of 255.
Record the quotient 5 as the next digit in the result. 
Result so far: 24109.4945
If we subtract 3205 from 3460, we get 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Let's proceed to step 13:
641 can be fit into 2550 3 times, resulting in a remainder of 627.
The number 3 becomes the next digit in our result. 
Result so far: 24109.49453
Deduct 1923 from 2550 and we're left with 627.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6270, and continue the process.

On to step 14:
641 goes into 6270 9 times with a remainder of 501.
The number 9 becomes the next digit in our result. 
Result so far: 24109.494539
The remainder is 501 after subtracting 5769 from 6270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5010, and continue the process.

Let's proceed to step 15:
5010 divided by 641 is 7 with a remainder of 523.
The number 7 becomes the next digit in our result. 
Result so far: 24109.4945397
Subtracting 4487 from 5010 leaves us with 523.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5230, and continue the process.

Moving on to step 16:
5230 divided by 641 is 8 with a remainder of 102.
The next digit of our result is 8. 
Result so far: 24109.49453978
Subtract 5128 from 5230 to 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.

After the division, we end up with 24109.49453978 and a remainder of 1.02e-07.