43696399 ÷ 639 
We want to divide 43696399 by 639.

Let's proceed to step 1:
The number 639 fits into 4 0 times, leaving a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 4 to get 4.
Append the next digit (3) from the dividend to 4 and continue with: 43 / 639

Step 2:
43 divided by 639 is 0 with a remainder of 43.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we take 0 away from 43, we end up with 43.
Fetch the next digit (6) from the dividend, attach it to 43 and continue: 436 / 639

Moving on to step 3:
If we divide 436 by 639, we get 0 and a remainder of 436.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 436 after subtracting 0 from 436.
Append the next digit (9) from the dividend to 436 and continue with: 4369 / 639

Going ahead to step 4:
The number 639 fits into 4369 6 times, leaving a remainder of 535.
The number 6 becomes the next digit in our result. 
Result so far: 6.0
Subtracting 3834 from 4369 leaves us with 535.
Grab the next digit (6) from the dividend, add it to 535, then carry on: 5356 / 639

Let's proceed to step 5:
The number 639 fits into 5356 8 times, leaving a remainder of 244.
Record the quotient 8 as the next digit in the result. 
Result so far: 68.0
If we subtract 5112 from 5356, we get 244.
Fetch the next digit (3) from the dividend, attach it to 244 and continue: 2443 / 639

Moving on to step 6:
639 goes into 2443 3 times with a remainder of 526.
Put 3 as the next digit of the answer. 
Result so far: 683.0
Deduct 1917 from 2443 and we're left with 526.
Take the next digit (9) from the dividend and append it to 526, then repeat: 5269 / 639

Step 7:
5269 divided by 639 is 8 with a remainder of 157.
Record the quotient 8 as the next digit in the result. 
Result so far: 6838.0
Deduct 5112 from 5269 and we're left with 157.
Fetch the next digit (9) from the dividend, attach it to 157 and continue: 1579 / 639

On to step 8:
If we divide 1579 by 639, we get 2 and a remainder of 301.
The next digit of our result is 2. 
Result so far: 68382.0
Subtract 1278 from 1579 to get 301.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3010, and continue the process.

On to step 9:
If we divide 3010 by 639, we get 4 and a remainder of 454.
The number 4 becomes the next digit in our result. 
Result so far: 68382.4
The remainder is 454 after subtracting 2556 from 3010.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4540, and continue the process.

Step 10:
If we divide 4540 by 639, we get 7 and a remainder of 67.
Put 7 as the next digit of the answer. 
Result so far: 68382.47
Subtracting 4473 from 4540 leaves us with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Moving on to step 11:
If we divide 670 by 639, we get 1 and a remainder of 31.
The number 1 becomes the next digit in our result. 
Result so far: 68382.471
If we subtract 639 from 670, we get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 12:
If we divide 310 by 639, we get 0 and a remainder of 310.
Write down 0 as next digit of the result. 
Result so far: 68382.471
Subtracting 0 from 310 leaves us with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Moving on to step 13:
When dividing 3100 by 639, we get 4 with a remainder of 544.
Put 4 as the next digit of the answer. 
Result so far: 68382.47104
The remainder is 544 after subtracting 2556 from 3100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Let's proceed to step 14:
When dividing 5440 by 639, we get 8 with a remainder of 328.
Put 8 as the next digit of the answer. 
Result so far: 68382.471048
Subtract 5112 from 5440 to get 328.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3280, and continue the process.

Advancing to step 15:
639 can be fit into 3280 5 times, resulting in a remainder of 85.
Put 5 as the next digit of the answer. 
Result so far: 68382.4710485
Subtract 3195 from 3280 to get 85.
Since there are no more digits in the dividend, we add a zero to the remainder making it 850, and continue the process.

Moving on to step 16:
639 can be fit into 850 1 times, resulting in a remainder of 211.
Put 1 as the next digit of the answer. 
Result so far: 68382.47104851
The remainder is 211 after subtracting 639 from 850.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2110, and continue the process.

In conclusion, the division gives 68382.47104851 with a balance of 2.11e-07.