Let's divide 75861681 by 639
We want to divide 75861681 by 639.

On to step 1:
When dividing 7 by 639, we get 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (5) from the dividend, add it to 7, then carry on: 75 / 639

Advancing to step 2:
639 can be fit into 75 0 times, resulting in a remainder of 75.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 75 after subtracting 0 from 75.
Bring next digit (8) of the dividend behind the 75 and repeat the process: 758 / 639

Step 3:
The number 639 fits into 758 1 times, leaving a remainder of 119.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 639 from 758 and we're left with 119.
Take the next digit (6) from the dividend and append it to 119, then repeat: 1196 / 639

Advancing to step 4:
639 goes into 1196 1 times with a remainder of 557.
Write down 1 as next digit of the result. 
Result so far: 11.0
The remainder is 557 after subtracting 639 from 1196.
Append the next digit (1) from the dividend to 557 and continue with: 5571 / 639

On to step 5:
If we divide 5571 by 639, we get 8 and a remainder of 459.
Use 8 as the next digit of our solution. 
Result so far: 118.0
The remainder is 459 after subtracting 5112 from 5571.
Grab the next digit (6) from the dividend, add it to 459, then carry on: 4596 / 639

Step 6:
The number 639 fits into 4596 7 times, leaving a remainder of 123.
The next digit of our result is 7. 
Result so far: 1187.0
The remainder is 123 after subtracting 4473 from 4596.
Grab the next digit (8) from the dividend, add it to 123, then carry on: 1238 / 639

Going ahead to step 7:
If we divide 1238 by 639, we get 1 and a remainder of 599.
The number 1 becomes the next digit in our result. 
Result so far: 11871.0
Subtract 639 from 1238 to get 599.
Append the next digit (1) from the dividend to 599 and continue with: 5991 / 639

Advancing to step 8:
639 can be fit into 5991 9 times, resulting in a remainder of 240.
Use 9 as the next digit of our solution. 
Result so far: 118719.0
If we subtract 5751 from 5991, we get 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

On to step 9:
If we divide 2400 by 639, we get 3 and a remainder of 483.
Record the quotient 3 as the next digit in the result. 
Result so far: 118719.3
Subtract 1917 from 2400 to get 483.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4830, and continue the process.

Step 10:
4830 divided by 639 is 7 with a remainder of 357.
The number 7 becomes the next digit in our result. 
Result so far: 118719.37
If we take 4473 away from 4830, we end up with 357.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3570, and continue the process.

Moving on to step 11:
639 can be fit into 3570 5 times, resulting in a remainder of 375.
The next digit of our result is 5. 
Result so far: 118719.375
Subtract 3195 from 3570 to get 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Let's proceed to step 12:
If we divide 3750 by 639, we get 5 and a remainder of 555.
Put 5 as the next digit of the answer. 
Result so far: 118719.3755
The remainder is 555 after subtracting 3195 from 3750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5550, and continue the process.

After the division, we end up with 118719.3755 and a remainder of 0.00555.