We look at the division of 13688711 by 647 
We want to figure out the number of times 13688711 can be divided by 647.

Advancing to step 1:
1 divided by 647 is 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Include the next digit (3) from the dividend after 1, then repeat: 13 / 647

Going ahead to step 2:
If we divide 13 by 647, we get 0 and a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 13 to get 13.
Take the next digit (6) from the dividend and append it to 13, then repeat: 136 / 647

Going ahead to step 3:
647 can be fit into 136 0 times, resulting in a remainder of 136.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 136 to get 136.
Bring next digit (8) of the dividend behind the 136 and repeat the process: 1368 / 647

Advancing to step 4:
1368 divided by 647 is 2 with a remainder of 74.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 1294 from 1368 leaves us with 74.
Append the next digit (8) from the dividend to 74 and continue with: 748 / 647

Advancing to step 5:
647 can be fit into 748 1 times, resulting in a remainder of 101.
The number 1 becomes the next digit in our result. 
Result so far: 21.0
Subtracting 647 from 748 leaves us with 101.
Bring next digit (7) of the dividend behind the 101 and repeat the process: 1017 / 647

On to step 6:
647 can be fit into 1017 1 times, resulting in a remainder of 370.
Use 1 as the next digit of our solution. 
Result so far: 211.0
The remainder is 370 after subtracting 647 from 1017.
Include the next digit (1) from the dividend after 370, then repeat: 3701 / 647

Advancing to step 7:
If we divide 3701 by 647, we get 5 and a remainder of 466.
The next digit of our result is 5. 
Result so far: 2115.0
If we take 3235 away from 3701, we end up with 466.
Grab the next digit (1) from the dividend, add it to 466, then carry on: 4661 / 647

On to step 8:
If we divide 4661 by 647, we get 7 and a remainder of 132.
Put 7 as the next digit of the answer. 
Result so far: 21157.0
Subtract 4529 from 4661 to get 132.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1320, and continue the process.

Let's proceed to step 9:
647 goes into 1320 2 times with a remainder of 26.
The number 2 becomes the next digit in our result. 
Result so far: 21157.2
If we take 1294 away from 1320, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 10:
260 divided by 647 is 0 with a remainder of 260.
Put 0 as the next digit of the answer. 
Result so far: 21157.2
Deduct 0 from 260 and we're left with 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 11:
647 can be fit into 2600 4 times, resulting in a remainder of 12.
The next digit of our result is 4. 
Result so far: 21157.204
If we take 2588 away from 2600, we end up with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 12:
The number 647 fits into 120 0 times, leaving a remainder of 120.
Write down 0 as next digit of the result. 
Result so far: 21157.204
If we subtract 0 from 120, we get 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Advancing to step 13:
647 can be fit into 1200 1 times, resulting in a remainder of 553.
Record the quotient 1 as the next digit in the result. 
Result so far: 21157.20401
Deduct 647 from 1200 and we're left with 553.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5530, and continue the process.

Moving on to step 14:
5530 divided by 647 is 8 with a remainder of 354.
Use 8 as the next digit of our solution. 
Result so far: 21157.204018
If we subtract 5176 from 5530, we get 354.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3540, and continue the process.

On to step 15:
647 goes into 3540 5 times with a remainder of 305.
Record the quotient 5 as the next digit in the result. 
Result so far: 21157.2040185
Subtract 3235 from 3540 to get 305.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3050, and continue the process.

On to step 16:
647 can be fit into 3050 4 times, resulting in a remainder of 462.
The next digit of our result is 4. 
Result so far: 21157.20401854
Subtracting 2588 from 3050 leaves us with 462.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4620, and continue the process.

Our division results in 21157.20401854 with a remaining 4.62e-07.