12439028 divided by 689 
Let's see how many times 689 fits into 12439028.

Step 1:
1 divided by 689 is 0 with a remainder of 1.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 1 after subtracting 0 from 1.
Bring next digit (2) of the dividend behind the 1 and repeat the process: 12 / 689

Going ahead to step 2:
689 goes into 12 0 times with a remainder of 12.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 12 and we're left with 12.
Fetch the next digit (4) from the dividend, attach it to 12 and continue: 124 / 689

Going ahead to step 3:
689 can be fit into 124 0 times, resulting in a remainder of 124.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 124 to get 124.
Grab the next digit (3) from the dividend, add it to 124, then carry on: 1243 / 689

Let's proceed to step 4:
When dividing 1243 by 689, we get 1 with a remainder of 554.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 689 away from 1243, we end up with 554.
Fetch the next digit (9) from the dividend, attach it to 554 and continue: 5549 / 689

Advancing to step 5:
When dividing 5549 by 689, we get 8 with a remainder of 37.
Record the quotient 8 as the next digit in the result. 
Result so far: 18.0
If we take 5512 away from 5549, we end up with 37.
Fetch the next digit (0) from the dividend, attach it to 37 and continue: 370 / 689

Moving on to step 6:
The number 689 fits into 370 0 times, leaving a remainder of 370.
Use 0 as the next digit of our solution. 
Result so far: 180.0
Subtracting 0 from 370 leaves us with 370.
Include the next digit (2) from the dividend after 370, then repeat: 3702 / 689

Going ahead to step 7:
689 can be fit into 3702 5 times, resulting in a remainder of 257.
Put 5 as the next digit of the answer. 
Result so far: 1805.0
Deduct 3445 from 3702 and we're left with 257.
Bring next digit (8) of the dividend behind the 257 and repeat the process: 2578 / 689

Moving on to step 8:
2578 divided by 689 is 3 with a remainder of 511.
The number 3 becomes the next digit in our result. 
Result so far: 18053.0
If we subtract 2067 from 2578, we get 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5110, and continue the process.

Going ahead to step 9:
689 goes into 5110 7 times with a remainder of 287.
Use 7 as the next digit of our solution. 
Result so far: 18053.7
If we take 4823 away from 5110, we end up with 287.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2870, and continue the process.

Step 10:
When dividing 2870 by 689, we get 4 with a remainder of 114.
Write down 4 as next digit of the result. 
Result so far: 18053.74
The remainder is 114 after subtracting 2756 from 2870.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Step 11:
When dividing 1140 by 689, we get 1 with a remainder of 451.
Record the quotient 1 as the next digit in the result. 
Result so far: 18053.741
If we subtract 689 from 1140, we get 451.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4510, and continue the process.

Going ahead to step 12:
689 goes into 4510 6 times with a remainder of 376.
Record the quotient 6 as the next digit in the result. 
Result so far: 18053.7416
If we subtract 4134 from 4510, we get 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Moving on to step 13:
689 goes into 3760 5 times with a remainder of 315.
The next digit of our result is 5. 
Result so far: 18053.74165
If we subtract 3445 from 3760, we get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Moving on to step 14:
When dividing 3150 by 689, we get 4 with a remainder of 394.
Put 4 as the next digit of the answer. 
Result so far: 18053.741654
If we take 2756 away from 3150, we end up with 394.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3940, and continue the process.

Going ahead to step 15:
If we divide 3940 by 689, we get 5 and a remainder of 495.
Record the quotient 5 as the next digit in the result. 
Result so far: 18053.7416545
If we take 3445 away from 3940, we end up with 495.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4950, and continue the process.

Moving on to step 16:
4950 divided by 689 is 7 with a remainder of 127.
Put 7 as the next digit of the answer. 
Result so far: 18053.74165457
Deduct 4823 from 4950 and we're left with 127.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1270, and continue the process.

In conclusion, the division gives 18053.74165457 with a balance of 1.27e-07.