We look at the division of 86043591 by 434 
Our goal is to divide 86043591 by 434.

Moving on to step 1:
If we divide 8 by 434, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 8 and we're left with 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 434

Let's proceed to step 2:
The number 434 fits into 86 0 times, leaving a remainder of 86.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 86 leaves us with 86.
Bring next digit (0) of the dividend behind the 86 and repeat the process: 860 / 434

Let's proceed to step 3:
If we divide 860 by 434, we get 1 and a remainder of 426.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 426 after subtracting 434 from 860.
Fetch the next digit (4) from the dividend, attach it to 426 and continue: 4264 / 434

Let's proceed to step 4:
434 goes into 4264 9 times with a remainder of 358.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Subtracting 3906 from 4264 leaves us with 358.
Include the next digit (3) from the dividend after 358, then repeat: 3583 / 434

Going ahead to step 5:
434 goes into 3583 8 times with a remainder of 111.
Use 8 as the next digit of our solution. 
Result so far: 198.0
Subtracting 3472 from 3583 leaves us with 111.
Grab the next digit (5) from the dividend, add it to 111, then carry on: 1115 / 434

Let's proceed to step 6:
When dividing 1115 by 434, we get 2 with a remainder of 247.
The next digit of our result is 2. 
Result so far: 1982.0
The remainder is 247 after subtracting 868 from 1115.
Include the next digit (9) from the dividend after 247, then repeat: 2479 / 434

Let's proceed to step 7:
2479 divided by 434 is 5 with a remainder of 309.
The next digit of our result is 5. 
Result so far: 19825.0
Subtracting 2170 from 2479 leaves us with 309.
Append the next digit (1) from the dividend to 309 and continue with: 3091 / 434

Advancing to step 8:
434 goes into 3091 7 times with a remainder of 53.
Put 7 as the next digit of the answer. 
Result so far: 198257.0
The remainder is 53 after subtracting 3038 from 3091.
Since there are no more digits in the dividend, we add a zero to the remainder making it 530, and continue the process.

Let's proceed to step 9:
530 divided by 434 is 1 with a remainder of 96.
Record the quotient 1 as the next digit in the result. 
Result so far: 198257.1
The remainder is 96 after subtracting 434 from 530.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Going ahead to step 10:
434 goes into 960 2 times with a remainder of 92.
Use 2 as the next digit of our solution. 
Result so far: 198257.12
If we subtract 868 from 960, we get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Step 11:
434 can be fit into 920 2 times, resulting in a remainder of 52.
Record the quotient 2 as the next digit in the result. 
Result so far: 198257.122
Subtracting 868 from 920 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final outcome is 198257.122, with a leftover of 0.0052.