We're dividing 355193 by 86 
We're looking to find how many times 86 goes into 355193.

Step 1:
86 can be fit into 3 0 times, resulting in a remainder of 3.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 3, we end up with 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 86

On to step 2:
The number 86 fits into 35 0 times, leaving a remainder of 35.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 35 and we're left with 35.
Fetch the next digit (5) from the dividend, attach it to 35 and continue: 355 / 86

Let's proceed to step 3:
86 can be fit into 355 4 times, resulting in a remainder of 11.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 344 from 355 leaves us with 11.
Fetch the next digit (1) from the dividend, attach it to 11 and continue: 111 / 86

Advancing to step 4:
If we divide 111 by 86, we get 1 and a remainder of 25.
Use 1 as the next digit of our solution. 
Result so far: 41.0
Deduct 86 from 111 and we're left with 25.
Fetch the next digit (9) from the dividend, attach it to 25 and continue: 259 / 86

Going ahead to step 5:
If we divide 259 by 86, we get 3 and a remainder of 1.
The next digit of our result is 3. 
Result so far: 413.0
Subtracting 258 from 259 leaves us with 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 86

Advancing to step 6:
If we divide 13 by 86, we get 0 and a remainder of 13.
Use 0 as the next digit of our solution. 
Result so far: 4130.0
If we take 0 away from 13, we end up with 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 goes into 130 1 times with a remainder of 44.
Put 1 as the next digit of the answer. 
Result so far: 4130.1
The remainder is 44 after subtracting 86 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

Going ahead to step 8:
86 can be fit into 440 5 times, resulting in a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 4130.15
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 9:
The number 86 fits into 100 1 times, leaving a remainder of 14.
The number 1 becomes the next digit in our result. 
Result so far: 4130.151
If we take 86 away from 100, we end up 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.

Moving on to step 10:
140 divided by 86 is 1 with a remainder of 54.
Use 1 as the next digit of our solution. 
Result so far: 4130.1511
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 4130.1511, with a leftover of 0.00054.