64439879 ÷ 600 
Let's see how many times 600 fits into 64439879.

On to step 1:
When dividing 6 by 600, we get 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Include the next digit (4) from the dividend after 6, then repeat: 64 / 600

Let's proceed to step 2:
When dividing 64 by 600, we get 0 with a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Bring next digit (4) of the dividend behind the 64 and repeat the process: 644 / 600

Advancing to step 3:
When dividing 644 by 600, we get 1 with a remainder of 44.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 44 after subtracting 600 from 644.
Take the next digit (3) from the dividend and append it to 44, then repeat: 443 / 600

Let's proceed to step 4:
When dividing 443 by 600, we get 0 with a remainder of 443.
Use 0 as the next digit of our solution. 
Result so far: 10.0
If we subtract 0 from 443, we get 443.
Grab the next digit (9) from the dividend, add it to 443, then carry on: 4439 / 600

Going ahead to step 5:
The number 600 fits into 4439 7 times, leaving a remainder of 239.
Put 7 as the next digit of the answer. 
Result so far: 107.0
If we take 4200 away from 4439, we end up with 239.
Fetch the next digit (8) from the dividend, attach it to 239 and continue: 2398 / 600

Moving on to step 6:
600 goes into 2398 3 times with a remainder of 598.
Write down 3 as next digit of the result. 
Result so far: 1073.0
Deduct 1800 from 2398 and we're left with 598.
Take the next digit (7) from the dividend and append it to 598, then repeat: 5987 / 600

Let's proceed to step 7:
When dividing 5987 by 600, we get 9 with a remainder of 587.
Write down 9 as next digit of the result. 
Result so far: 10739.0
If we take 5400 away from 5987, we end up with 587.
Fetch the next digit (9) from the dividend, attach it to 587 and continue: 5879 / 600

Moving on to step 8:
600 goes into 5879 9 times with a remainder of 479.
The next digit of our result is 9. 
Result so far: 107399.0
The remainder is 479 after subtracting 5400 from 5879.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

Moving on to step 9:
When dividing 4790 by 600, we get 7 with a remainder of 590.
The next digit of our result is 7. 
Result so far: 107399.7
The remainder is 590 after subtracting 4200 from 4790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5900, and continue the process.

Let's proceed to step 10:
600 goes into 5900 9 times with a remainder of 500.
Record the quotient 9 as the next digit in the result. 
Result so far: 107399.79
The remainder is 500 after subtracting 5400 from 5900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 11:
When dividing 5000 by 600, we get 8 with a remainder of 200.
The next digit of our result is 8. 
Result so far: 107399.798
The remainder is 200 after subtracting 4800 from 5000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 12:
600 can be fit into 2000 3 times, resulting in a remainder of 200.
Put 3 as the next digit of the answer. 
Result so far: 107399.7983
If we subtract 1800 from 2000, we get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Let's proceed to step 13:
When dividing 2000 by 600, we get 3 with a remainder of 200.
Put 3 as the next digit of the answer. 
Result so far: 107399.79833
If we take 1800 away from 2000, we end up with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

The final result is 107399.79833 with a remainder of 0.0002.