We look at the division of 145181 by 86 
We're looking to find how many times 86 goes into 145181.

Step 1:
The number 86 fits into 1 0 times, leaving a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 86

On to step 2:
If we divide 14 by 86, we get 0 and a remainder of 14.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 14 and we're left with 14.
Bring next digit (5) of the dividend behind the 14 and repeat the process: 145 / 86

Going ahead to step 3:
If we divide 145 by 86, we get 1 and a remainder of 59.
The next digit of our result is 1. 
Result so far: 1.0
If we take 86 away from 145, we end up with 59.
Include the next digit (1) from the dividend after 59, then repeat: 591 / 86

Advancing to step 4:
When dividing 591 by 86, we get 6 with a remainder of 75.
Put 6 as the next digit of the answer. 
Result so far: 16.0
If we take 516 away from 591, we end up with 75.
Include the next digit (8) from the dividend after 75, then repeat: 758 / 86

Going ahead to step 5:
When dividing 758 by 86, we get 8 with a remainder of 70.
Write down 8 as next digit of the result. 
Result so far: 168.0
If we take 688 away from 758, we end up with 70.
Append the next digit (1) from the dividend to 70 and continue with: 701 / 86

Going ahead to step 6:
701 divided by 86 is 8 with a remainder of 13.
Put 8 as the next digit of the answer. 
Result so far: 1688.0
Subtract 688 from 701 to get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

On to step 7:
86 can be fit into 130 1 times, resulting in a remainder of 44.
Write down 1 as next digit of the result. 
Result so far: 1688.1
If we subtract 86 from 130, we 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.

Moving on to step 8:
86 goes into 440 5 times with a remainder of 10.
Record the quotient 5 as the next digit in the result. 
Result so far: 1688.15
If we subtract 430 from 440, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
When dividing 100 by 86, we get 1 with a remainder of 14.
Write down 1 as next digit of the result. 
Result so far: 1688.151
Subtract 86 from 100 to get 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 10:
The number 86 fits into 140 1 times, leaving a remainder of 54.
The next digit of our result is 1. 
Result so far: 1688.1511
Subtract 86 from 140 to get 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 1688.1511, with a leftover of 0.00054.