We look at the division of 15912668 by 5 
We want to figure out the number of times 15912668 can be divided by 5.

On to step 1:
When dividing 1 by 5, we get 0 with a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 5

On to step 2:
The number 5 fits into 15 3 times, leaving a remainder of 0.
Write down 3 as next digit of the result. 
Result so far: 3.0
Deduct 15 from 15 and we're left with 0.
Take the next digit (9) from the dividend and append it to 0, then repeat: 9 / 5

Let's proceed to step 3:
When dividing 9 by 5, we get 1 with a remainder of 4.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
The remainder is 4 after subtracting 5 from 9.
Fetch the next digit (1) from the dividend, attach it to 4 and continue: 41 / 5

Advancing to step 4:
When dividing 41 by 5, we get 8 with a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 318.0
Deduct 40 from 41 and we're left with 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 5

Step 5:
If we divide 12 by 5, we get 2 and a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 3182.0
If we take 10 away from 12, we end up with 2.
Take the next digit (6) from the dividend and append it to 2, then repeat: 26 / 5

On to step 6:
The number 5 fits into 26 5 times, leaving a remainder of 1.
Record the quotient 5 as the next digit in the result. 
Result so far: 31825.0
Subtract 25 from 26 to get 1.
Include the next digit (6) from the dividend after 1, then repeat: 16 / 5

On to step 7:
5 goes into 16 3 times with a remainder of 1.
Record the quotient 3 as the next digit in the result. 
Result so far: 318253.0
If we subtract 15 from 16, we get 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 5

On to step 8:
If we divide 18 by 5, we get 3 and a remainder of 3.
Put 3 as the next digit of the answer. 
Result so far: 3182533.0
Subtract 15 from 18 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.

Going ahead to step 9:
When dividing 30 by 5, we get 6 with a remainder of 0.
Record the quotient 6 as the next digit in the result. 
Result so far: 3182533.6
If we take 30 away from 30, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
The number 5 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 3182533.6
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 11:
When dividing 0 by 5, we get 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 3182533.6
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 3182533.6 and a remainder of 0.0.