We divide 668898 by 13
We want to figure out the number of times 668898 can be divided by 13.

Going ahead to step 1:
13 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
Subtract 0 from 6 to get 6.
Fetch the next digit (6) from the dividend, attach it to 6 and continue: 66 / 13

On to step 2:
The number 13 fits into 66 5 times, leaving a remainder of 1.
Use 5 as the next digit of our solution. 
Result so far: 5.0
Subtract 65 from 66 to get 1.
Include the next digit (8) from the dividend after 1, then repeat: 18 / 13

Step 3:
If we divide 18 by 13, we get 1 and a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 51.0
Deduct 13 from 18 and we're left with 5.
Take the next digit (8) from the dividend and append it to 5, then repeat: 58 / 13

On to step 4:
If we divide 58 by 13, we get 4 and a remainder of 6.
The number 4 becomes the next digit in our result. 
Result so far: 514.0
If we subtract 52 from 58, we get 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 13

On to step 5:
13 goes into 69 5 times with a remainder of 4.
Record the quotient 5 as the next digit in the result. 
Result so far: 5145.0
Deduct 65 from 69 and we're left with 4.
Include the next digit (8) from the dividend after 4, then repeat: 48 / 13

Going ahead to step 6:
The number 13 fits into 48 3 times, leaving a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 51453.0
Deduct 39 from 48 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 7:
The number 13 fits into 90 6 times, leaving a remainder of 12.
Record the quotient 6 as the next digit in the result. 
Result so far: 51453.6
If we take 78 away from 90, 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.

Step 8:
13 goes into 120 9 times with a remainder of 3.
Record the quotient 9 as the next digit in the result. 
Result so far: 51453.69
The remainder is 3 after subtracting 117 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 9:
13 goes into 30 2 times with a remainder of 4.
Use 2 as the next digit of our solution. 
Result so far: 51453.692
If we subtract 26 from 30, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Going ahead to step 10:
The number 13 fits into 40 3 times, leaving a remainder of 1.
The number 3 becomes the next digit in our result. 
Result so far: 51453.6923
Subtracting 39 from 40 leaves us with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 11:
10 divided by 13 is 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 51453.6923
The remainder is 10 after subtracting 0 from 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 12:
The number 13 fits into 100 7 times, leaving a remainder of 9.
The next digit of our result is 7. 
Result so far: 51453.692307
Deduct 91 from 100 and we're left with 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

Moving on to step 13:
13 can be fit into 90 6 times, resulting in a remainder of 12.
The number 6 becomes the next digit in our result. 
Result so far: 51453.6923076
If we take 78 away from 90, 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.

Let's proceed to step 14:
120 divided by 13 is 9 with a remainder of 3.
The next digit of our result is 9. 
Result so far: 51453.69230769
Subtract 117 from 120 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Our division results in 51453.69230769 with a remaining 3e-09.