86016855 divided by 638 
We want to divide 86016855 by 638.

On to step 1:
If we divide 8 by 638, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 638

Step 2:
86 divided by 638 is 0 with a remainder of 86.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Include the next digit (0) from the dividend after 86, then repeat: 860 / 638

On to step 3:
The number 638 fits into 860 1 times, leaving a remainder of 222.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 638 from 860 to get 222.
Bring next digit (1) of the dividend behind the 222 and repeat the process: 2221 / 638

Let's proceed to step 4:
When dividing 2221 by 638, we get 3 with a remainder of 307.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtracting 1914 from 2221 leaves us with 307.
Take the next digit (6) from the dividend and append it to 307, then repeat: 3076 / 638

Step 5:
If we divide 3076 by 638, we get 4 and a remainder of 524.
Put 4 as the next digit of the answer. 
Result so far: 134.0
Deduct 2552 from 3076 and we're left with 524.
Bring next digit (8) of the dividend behind the 524 and repeat the process: 5248 / 638

On to step 6:
When dividing 5248 by 638, we get 8 with a remainder of 144.
Write down 8 as next digit of the result. 
Result so far: 1348.0
Deduct 5104 from 5248 and we're left with 144.
Bring next digit (5) of the dividend behind the 144 and repeat the process: 1445 / 638

Advancing to step 7:
638 can be fit into 1445 2 times, resulting in a remainder of 169.
Record the quotient 2 as the next digit in the result. 
Result so far: 13482.0
Subtracting 1276 from 1445 leaves us with 169.
Grab the next digit (5) from the dividend, add it to 169, then carry on: 1695 / 638

Moving on to step 8:
638 goes into 1695 2 times with a remainder of 419.
Record the quotient 2 as the next digit in the result. 
Result so far: 134822.0
If we take 1276 away from 1695, we end up with 419.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4190, and continue the process.

On to step 9:
If we divide 4190 by 638, we get 6 and a remainder of 362.
Write down 6 as next digit of the result. 
Result so far: 134822.6
If we subtract 3828 from 4190, we get 362.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3620, and continue the process.

Going ahead to step 10:
When dividing 3620 by 638, we get 5 with a remainder of 430.
The next digit of our result is 5. 
Result so far: 134822.65
If we take 3190 away from 3620, we end up with 430.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4300, and continue the process.

Advancing to step 11:
If we divide 4300 by 638, we get 6 and a remainder of 472.
Put 6 as the next digit of the answer. 
Result so far: 134822.656
Subtract 3828 from 4300 to get 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

On to step 12:
638 can be fit into 4720 7 times, resulting in a remainder of 254.
Use 7 as the next digit of our solution. 
Result so far: 134822.6567
If we take 4466 away from 4720, we end up with 254.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2540, and continue the process.

Advancing to step 13:
2540 divided by 638 is 3 with a remainder of 626.
Write down 3 as next digit of the result. 
Result so far: 134822.65673
The remainder is 626 after subtracting 1914 from 2540.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6260, and continue the process.

Step 14:
638 goes into 6260 9 times with a remainder of 518.
Use 9 as the next digit of our solution. 
Result so far: 134822.656739
Subtract 5742 from 6260 to get 518.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5180, and continue the process.

Step 15:
If we divide 5180 by 638, we get 8 and a remainder of 76.
Record the quotient 8 as the next digit in the result. 
Result so far: 134822.6567398
If we subtract 5104 from 5180, we get 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 16:
The number 638 fits into 760 1 times, leaving a remainder of 122.
The number 1 becomes the next digit in our result. 
Result so far: 134822.65673981
If we take 638 away from 760, we end up with 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

The final result is 134822.65673981 with a remainder of 1.22e-07.