43775825 ÷ 639 
We want to figure out the number of times 43775825 can be divided by 639.

Advancing to step 1:
If we divide 4 by 639, we get 0 and a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Grab the next digit (3) from the dividend, add it to 4, then carry on: 43 / 639

On to step 2:
639 can be fit into 43 0 times, resulting in a remainder of 43.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 43 leaves us with 43.
Append the next digit (7) from the dividend to 43 and continue with: 437 / 639

Let's proceed to step 3:
437 divided by 639 is 0 with a remainder of 437.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 437, we get 437.
Include the next digit (7) from the dividend after 437, then repeat: 4377 / 639

Advancing to step 4:
639 goes into 4377 6 times with a remainder of 543.
The next digit of our result is 6. 
Result so far: 6.0
The remainder is 543 after subtracting 3834 from 4377.
Bring next digit (5) of the dividend behind the 543 and repeat the process: 5435 / 639

Moving on to step 5:
When dividing 5435 by 639, we get 8 with a remainder of 323.
Put 8 as the next digit of the answer. 
Result so far: 68.0
The remainder is 323 after subtracting 5112 from 5435.
Fetch the next digit (8) from the dividend, attach it to 323 and continue: 3238 / 639

Step 6:
If we divide 3238 by 639, we get 5 and a remainder of 43.
The number 5 becomes the next digit in our result. 
Result so far: 685.0
If we subtract 3195 from 3238, we get 43.
Take the next digit (2) from the dividend and append it to 43, then repeat: 432 / 639

On to step 7:
The number 639 fits into 432 0 times, leaving a remainder of 432.
Use 0 as the next digit of our solution. 
Result so far: 6850.0
If we take 0 away from 432, we end up with 432.
Fetch the next digit (5) from the dividend, attach it to 432 and continue: 4325 / 639

Advancing to step 8:
639 can be fit into 4325 6 times, resulting in a remainder of 491.
The number 6 becomes the next digit in our result. 
Result so far: 68506.0
Subtract 3834 from 4325 to get 491.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4910, and continue the process.

Advancing to step 9:
639 can be fit into 4910 7 times, resulting in a remainder of 437.
The number 7 becomes the next digit in our result. 
Result so far: 68506.7
Subtract 4473 from 4910 to get 437.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4370, and continue the process.

On to step 10:
If we divide 4370 by 639, we get 6 and a remainder of 536.
Record the quotient 6 as the next digit in the result. 
Result so far: 68506.76
If we subtract 3834 from 4370, we get 536.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5360, and continue the process.

Moving on to step 11:
639 can be fit into 5360 8 times, resulting in a remainder of 248.
The next digit of our result is 8. 
Result so far: 68506.768
The remainder is 248 after subtracting 5112 from 5360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2480, and continue the process.

Advancing to step 12:
If we divide 2480 by 639, we get 3 and a remainder of 563.
Write down 3 as next digit of the result. 
Result so far: 68506.7683
Subtracting 1917 from 2480 leaves us with 563.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5630, and continue the process.

Moving on to step 13:
639 can be fit into 5630 8 times, resulting in a remainder of 518.
Put 8 as the next digit of the answer. 
Result so far: 68506.76838
The remainder is 518 after subtracting 5112 from 5630.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Going ahead to step 14:
When dividing 5180 by 639, we get 8 with a remainder of 68.
Write down 8 as next digit of the result. 
Result so far: 68506.768388
If we subtract 5112 from 5180, we get 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

The final outcome is 68506.768388, with a leftover of 6.8e-06.