120100 divided by 86 
Our goal is to divide 120100 by 86.

Step 1:
86 can be fit into 1 0 times, resulting in a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (2) from the dividend and append it to 1, then repeat: 12 / 86

Advancing to step 2:
12 divided by 86 is 0 with a remainder of 12.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Fetch the next digit (0) from the dividend, attach it to 12 and continue: 120 / 86

Moving on to step 3:
86 can be fit into 120 1 times, resulting in a remainder of 34.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 34 after subtracting 86 from 120.
Fetch the next digit (1) from the dividend, attach it to 34 and continue: 341 / 86

Let's proceed to step 4:
86 can be fit into 341 3 times, resulting in a remainder of 83.
Use 3 as the next digit of our solution. 
Result so far: 13.0
Subtract 258 from 341 to get 83.
Bring next digit (0) of the dividend behind the 83 and repeat the process: 830 / 86

Step 5:
86 goes into 830 9 times with a remainder of 56.
Use 9 as the next digit of our solution. 
Result so far: 139.0
Deduct 774 from 830 and we're left with 56.
Include the next digit (0) from the dividend after 56, then repeat: 560 / 86

Going ahead to step 6:
560 divided by 86 is 6 with a remainder of 44.
Write down 6 as next digit of the result. 
Result so far: 1396.0
Subtract 516 from 560 to get 44.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 7:
86 can be fit into 440 5 times, resulting in a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 1396.5
If we take 430 away from 440, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

On to step 8:
86 goes into 100 1 times with a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 1396.51
The remainder is 14 after subtracting 86 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 9:
When dividing 140 by 86, we get 1 with a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 1396.511
Subtracting 86 from 140 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

The final outcome is 1396.511, with a leftover of 0.0054.