145912 ÷ 86 
Let's see how many times 86 fits into 145912.

Step 1:
1 divided by 86 is 0 with a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 86

Advancing to step 2:
86 can be fit into 14 0 times, resulting in a remainder of 14.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 14 after subtracting 0 from 14.
Take the next digit (5) from the dividend and append it to 14, then repeat: 145 / 86

Let's proceed to step 3:
86 goes into 145 1 times with a remainder of 59.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 86 away from 145, we end up with 59.
Take the next digit (9) from the dividend and append it to 59, then repeat: 599 / 86

Going ahead to step 4:
86 goes into 599 6 times with a remainder of 83.
The next digit of our result is 6. 
Result so far: 16.0
If we subtract 516 from 599, we get 83.
Bring next digit (1) of the dividend behind the 83 and repeat the process: 831 / 86

On to step 5:
If we divide 831 by 86, we get 9 and a remainder of 57.
The next digit of our result is 9. 
Result so far: 169.0
If we subtract 774 from 831, we get 57.
Bring next digit (2) of the dividend behind the 57 and repeat the process: 572 / 86

Moving on to step 6:
572 divided by 86 is 6 with a remainder of 56.
Use 6 as the next digit of our solution. 
Result so far: 1696.0
If we subtract 516 from 572, we get 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

On to step 7:
When dividing 560 by 86, we get 6 with a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 1696.6
Deduct 516 from 560 and we're left with 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 8:
If we divide 440 by 86, we get 5 and a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 1696.65
Subtract 430 from 440 to 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.

Moving on to step 9:
If we divide 100 by 86, we get 1 and a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 1696.651
Deduct 86 from 100 and we're left with 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:
If we divide 140 by 86, we get 1 and a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 1696.6511
Deduct 86 from 140 and we're left 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 1696.6511, with a leftover of 0.00054.