Let's divide 20100630 by 439
We want to figure out the number of times 20100630 can be divided by 439.

Step 1:
439 can be fit into 2 0 times, resulting in a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 2 to get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 439

Moving on to step 2:
20 divided by 439 is 0 with a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 20 leaves us with 20.
Append the next digit (1) from the dividend to 20 and continue with: 201 / 439

Moving on to step 3:
The number 439 fits into 201 0 times, leaving a remainder of 201.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 201 leaves us with 201.
Bring next digit (0) of the dividend behind the 201 and repeat the process: 2010 / 439

Step 4:
If we divide 2010 by 439, we get 4 and a remainder of 254.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Deduct 1756 from 2010 and we're left with 254.
Include the next digit (0) from the dividend after 254, then repeat: 2540 / 439

Let's proceed to step 5:
When dividing 2540 by 439, we get 5 with a remainder of 345.
The next digit of our result is 5. 
Result so far: 45.0
If we take 2195 away from 2540, we end up with 345.
Append the next digit (6) from the dividend to 345 and continue with: 3456 / 439

Advancing to step 6:
439 can be fit into 3456 7 times, resulting in a remainder of 383.
Write down 7 as next digit of the result. 
Result so far: 457.0
If we subtract 3073 from 3456, we get 383.
Append the next digit (3) from the dividend to 383 and continue with: 3833 / 439

Step 7:
3833 divided by 439 is 8 with a remainder of 321.
Write down 8 as next digit of the result. 
Result so far: 4578.0
Subtract 3512 from 3833 to get 321.
Append the next digit (0) from the dividend to 321 and continue with: 3210 / 439

Moving on to step 8:
439 goes into 3210 7 times with a remainder of 137.
Put 7 as the next digit of the answer. 
Result so far: 45787.0
Subtract 3073 from 3210 to get 137.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1370, and continue the process.

On to step 9:
When dividing 1370 by 439, we get 3 with a remainder of 53.
The next digit of our result is 3. 
Result so far: 45787.3
Deduct 1317 from 1370 and we're left with 53.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Step 10:
When dividing 530 by 439, we get 1 with a remainder of 91.
Put 1 as the next digit of the answer. 
Result so far: 45787.31
If we subtract 439 from 530, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

On to step 11:
When dividing 910 by 439, we get 2 with a remainder of 32.
The number 2 becomes the next digit in our result. 
Result so far: 45787.312
The remainder is 32 after subtracting 878 from 910.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 12:
If we divide 320 by 439, we get 0 and a remainder of 320.
Use 0 as the next digit of our solution. 
Result so far: 45787.312
If we take 0 away from 320, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

On to step 13:
When dividing 3200 by 439, we get 7 with a remainder of 127.
Record the quotient 7 as the next digit in the result. 
Result so far: 45787.31207
Subtracting 3073 from 3200 leaves us 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.

Moving on to step 14:
If we divide 1270 by 439, we get 2 and a remainder of 392.
The next digit of our result is 2. 
Result so far: 45787.312072
Deduct 878 from 1270 and we're left with 392.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3920, and continue the process.

Step 15:
3920 divided by 439 is 8 with a remainder of 408.
Use 8 as the next digit of our solution. 
Result so far: 45787.3120728
If we take 3512 away from 3920, we end up with 408.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4080, and continue the process.

Moving on to step 16:
The number 439 fits into 4080 9 times, leaving a remainder of 129.
Use 9 as the next digit of our solution. 
Result so far: 45787.31207289
If we take 3951 away from 4080, we end up with 129.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1290, and continue the process.

In conclusion, the division gives 45787.31207289 with a balance of 1.29e-07.