Let's divide 15661310 by 638
We want to figure out the number of times 15661310 can be divided by 638.

Let's proceed to step 1:
1 divided by 638 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 638

Going ahead to step 2:
If we divide 15 by 638, we get 0 and a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 15 and we're left with 15.
Append the next digit (6) from the dividend to 15 and continue with: 156 / 638

Moving on to step 3:
If we divide 156 by 638, we get 0 and a remainder of 156.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 156 and we're left with 156.
Take the next digit (6) from the dividend and append it to 156, then repeat: 1566 / 638

Let's proceed to step 4:
638 goes into 1566 2 times with a remainder of 290.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we subtract 1276 from 1566, we get 290.
Fetch the next digit (1) from the dividend, attach it to 290 and continue: 2901 / 638

Let's proceed to step 5:
The number 638 fits into 2901 4 times, leaving a remainder of 349.
Record the quotient 4 as the next digit in the result. 
Result so far: 24.0
Subtracting 2552 from 2901 leaves us with 349.
Append the next digit (3) from the dividend to 349 and continue with: 3493 / 638

Step 6:
638 can be fit into 3493 5 times, resulting in a remainder of 303.
The next digit of our result is 5. 
Result so far: 245.0
If we subtract 3190 from 3493, we get 303.
Bring next digit (1) of the dividend behind the 303 and repeat the process: 3031 / 638

Let's proceed to step 7:
638 can be fit into 3031 4 times, resulting in a remainder of 479.
Record the quotient 4 as the next digit in the result. 
Result so far: 2454.0
Deduct 2552 from 3031 and we're left with 479.
Grab the next digit (0) from the dividend, add it to 479, then carry on: 4790 / 638

Moving on to step 8:
638 goes into 4790 7 times with a remainder of 324.
Record the quotient 7 as the next digit in the result. 
Result so far: 24547.0
Subtracting 4466 from 4790 leaves us with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

On to step 9:
3240 divided by 638 is 5 with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 24547.5
Subtracting 3190 from 3240 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.

Let's proceed to step 10:
500 divided by 638 is 0 with a remainder of 500.
The number 0 becomes the next digit in our result. 
Result so far: 24547.5
Subtract 0 from 500 to get 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

Let's proceed to step 11:
5000 divided by 638 is 7 with a remainder of 534.
Record the quotient 7 as the next digit in the result. 
Result so far: 24547.507
Deduct 4466 from 5000 and we're left with 534.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5340, and continue the process.

On to step 12:
5340 divided by 638 is 8 with a remainder of 236.
Use 8 as the next digit of our solution. 
Result so far: 24547.5078
The remainder is 236 after subtracting 5104 from 5340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2360, and continue the process.

Step 13:
If we divide 2360 by 638, we get 3 and a remainder of 446.
The number 3 becomes the next digit in our result. 
Result so far: 24547.50783
If we take 1914 away from 2360, we end up with 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

On to step 14:
638 goes into 4460 6 times with a remainder of 632.
Use 6 as the next digit of our solution. 
Result so far: 24547.507836
If we take 3828 away from 4460, we end up with 632.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6320, and continue the process.

Advancing to step 15:
If we divide 6320 by 638, we get 9 and a remainder of 578.
The next digit of our result is 9. 
Result so far: 24547.5078369
The remainder is 578 after subtracting 5742 from 6320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5780, and continue the process.

Step 16:
5780 divided by 638 is 9 with a remainder of 38.
The next digit of our result is 9. 
Result so far: 24547.50783699
If we take 5742 away from 5780, we end up with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The quotient of the division is 24547.50783699, and the remainder is 3.8e-08.