We look at the division of 28399915 by 689 
We want to figure out the number of times 28399915 can be divided by 689.

Step 1:
If we divide 2 by 689, we get 0 and a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (8) from the dividend to 2 and continue with: 28 / 689

Let's proceed to step 2:
When dividing 28 by 689, we get 0 with a remainder of 28.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 28 after subtracting 0 from 28.
Take the next digit (3) from the dividend and append it to 28, then repeat: 283 / 689

Advancing to step 3:
283 divided by 689 is 0 with a remainder of 283.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 283 leaves us with 283.
Include the next digit (9) from the dividend after 283, then repeat: 2839 / 689

Moving on to step 4:
689 can be fit into 2839 4 times, resulting in a remainder of 83.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
If we take 2756 away from 2839, we end up with 83.
Append the next digit (9) from the dividend to 83 and continue with: 839 / 689

On to step 5:
When dividing 839 by 689, we get 1 with a remainder of 150.
Record the quotient 1 as the next digit in the result. 
Result so far: 41.0
If we subtract 689 from 839, we get 150.
Fetch the next digit (9) from the dividend, attach it to 150 and continue: 1509 / 689

Advancing to step 6:
If we divide 1509 by 689, we get 2 and a remainder of 131.
The next digit of our result is 2. 
Result so far: 412.0
If we take 1378 away from 1509, we end up with 131.
Fetch the next digit (1) from the dividend, attach it to 131 and continue: 1311 / 689

Going ahead to step 7:
The number 689 fits into 1311 1 times, leaving a remainder of 622.
The number 1 becomes the next digit in our result. 
Result so far: 4121.0
Subtract 689 from 1311 to get 622.
Fetch the next digit (5) from the dividend, attach it to 622 and continue: 6225 / 689

On to step 8:
689 can be fit into 6225 9 times, resulting in a remainder of 24.
Put 9 as the next digit of the answer. 
Result so far: 41219.0
Subtracting 6201 from 6225 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Advancing to step 9:
When dividing 240 by 689, we get 0 with a remainder of 240.
Write down 0 as next digit of the result. 
Result so far: 41219.0
The remainder is 240 after subtracting 0 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 10:
If we divide 2400 by 689, we get 3 and a remainder of 333.
Put 3 as the next digit of the answer. 
Result so far: 41219.03
If we subtract 2067 from 2400, we get 333.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3330, and continue the process.

Going ahead to step 11:
When dividing 3330 by 689, we get 4 with a remainder of 574.
Use 4 as the next digit of our solution. 
Result so far: 41219.034
If we subtract 2756 from 3330, we get 574.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5740, and continue the process.

Moving on to step 12:
689 goes into 5740 8 times with a remainder of 228.
Use 8 as the next digit of our solution. 
Result so far: 41219.0348
Deduct 5512 from 5740 and we're left with 228.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2280, and continue the process.

On to step 13:
If we divide 2280 by 689, we get 3 and a remainder of 213.
Record the quotient 3 as the next digit in the result. 
Result so far: 41219.03483
If we take 2067 away from 2280, we end up with 213.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2130, and continue the process.

Going ahead to step 14:
When dividing 2130 by 689, we get 3 with a remainder of 63.
The number 3 becomes the next digit in our result. 
Result so far: 41219.034833
Subtract 2067 from 2130 to get 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Our division results in 41219.034833 with a remaining 6.3e-06.