65171595 divided by 638 
We want to figure out the number of times 65171595 can be divided by 638.

Step 1:
638 can be fit into 6 0 times, resulting in a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Bring next digit (5) of the dividend behind the 6 and repeat the process: 65 / 638

Advancing to step 2:
638 can be fit into 65 0 times, resulting in a remainder of 65.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 65 to get 65.
Fetch the next digit (1) from the dividend, attach it to 65 and continue: 651 / 638

Moving on to step 3:
638 can be fit into 651 1 times, resulting in a remainder of 13.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 638 away from 651, we end up with 13.
Grab the next digit (7) from the dividend, add it to 13, then carry on: 137 / 638

Advancing to step 4:
When dividing 137 by 638, we get 0 with a remainder of 137.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
Subtracting 0 from 137 leaves us with 137.
Grab the next digit (1) from the dividend, add it to 137, then carry on: 1371 / 638

Let's proceed to step 5:
1371 divided by 638 is 2 with a remainder of 95.
Write down 2 as next digit of the result. 
Result so far: 102.0
If we subtract 1276 from 1371, we get 95.
Grab the next digit (5) from the dividend, add it to 95, then carry on: 955 / 638

Moving on to step 6:
If we divide 955 by 638, we get 1 and a remainder of 317.
The number 1 becomes the next digit in our result. 
Result so far: 1021.0
Subtracting 638 from 955 leaves us with 317.
Bring next digit (9) of the dividend behind the 317 and repeat the process: 3179 / 638

Let's proceed to step 7:
638 goes into 3179 4 times with a remainder of 627.
Write down 4 as next digit of the result. 
Result so far: 10214.0
Subtract 2552 from 3179 to get 627.
Append the next digit (5) from the dividend to 627 and continue with: 6275 / 638

Step 8:
638 goes into 6275 9 times with a remainder of 533.
The number 9 becomes the next digit in our result. 
Result so far: 102149.0
Deduct 5742 from 6275 and we're left with 533.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5330, and continue the process.

Going ahead to step 9:
638 goes into 5330 8 times with a remainder of 226.
Use 8 as the next digit of our solution. 
Result so far: 102149.8
The remainder is 226 after subtracting 5104 from 5330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

On to step 10:
2260 divided by 638 is 3 with a remainder of 346.
Write down 3 as next digit of the result. 
Result so far: 102149.83
If we take 1914 away from 2260, 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.

Moving on to step 11:
When dividing 3460 by 638, we get 5 with a remainder of 270.
The number 5 becomes the next digit in our result. 
Result so far: 102149.835
If we take 3190 away from 3460, we end up with 270.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2700, and continue the process.

On to step 12:
When dividing 2700 by 638, we get 4 with a remainder of 148.
Record the quotient 4 as the next digit in the result. 
Result so far: 102149.8354
The remainder is 148 after subtracting 2552 from 2700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1480, and continue the process.

On to step 13:
638 can be fit into 1480 2 times, resulting in a remainder of 204.
Write down 2 as next digit of the result. 
Result so far: 102149.83542
If we subtract 1276 from 1480, we get 204.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2040, and continue the process.

Going ahead to step 14:
638 can be fit into 2040 3 times, resulting in a remainder of 126.
Put 3 as the next digit of the answer. 
Result so far: 102149.835423
Deduct 1914 from 2040 and we're left with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

Let's proceed to step 15:
638 goes into 1260 1 times with a remainder of 622.
Put 1 as the next digit of the answer. 
Result so far: 102149.8354231
Subtracting 638 from 1260 leaves us with 622.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6220, and continue the process.

Moving on to step 16:
The number 638 fits into 6220 9 times, leaving a remainder of 478.
Record the quotient 9 as the next digit in the result. 
Result so far: 102149.83542319
If we subtract 5742 from 6220, we get 478.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4780, and continue the process.

After the division, we end up with 102149.83542319 and a remainder of 4.78e-07.