355974 ÷ 86 
We want to figure out the number of times 355974 can be divided by 86.

Going ahead to step 1:
When dividing 3 by 86, we get 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 86

Moving on to step 2:
35 divided by 86 is 0 with a remainder of 35.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 35 leaves us with 35.
Fetch the next digit (5) from the dividend, attach it to 35 and continue: 355 / 86

Advancing to step 3:
If we divide 355 by 86, we get 4 and a remainder of 11.
The next digit of our result is 4. 
Result so far: 4.0
Deduct 344 from 355 and we're left with 11.
Fetch the next digit (9) from the dividend, attach it to 11 and continue: 119 / 86

Let's proceed to step 4:
If we divide 119 by 86, we get 1 and a remainder of 33.
The number 1 becomes the next digit in our result. 
Result so far: 41.0
Deduct 86 from 119 and we're left with 33.
Include the next digit (7) from the dividend after 33, then repeat: 337 / 86

Let's proceed to step 5:
86 goes into 337 3 times with a remainder of 79.
The number 3 becomes the next digit in our result. 
Result so far: 413.0
Subtract 258 from 337 to get 79.
Grab the next digit (4) from the dividend, add it to 79, then carry on: 794 / 86

Moving on to step 6:
The number 86 fits into 794 9 times, leaving a remainder of 20.
Use 9 as the next digit of our solution. 
Result so far: 4139.0
If we subtract 774 from 794, we get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Moving on to step 7:
If we divide 200 by 86, we get 2 and a remainder of 28.
The next digit of our result is 2. 
Result so far: 4139.2
Subtract 172 from 200 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Going ahead to step 8:
When dividing 280 by 86, we get 3 with a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 4139.23
If we take 258 away from 280, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 9:
86 can be fit into 220 2 times, resulting in a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 4139.232
If we take 172 away from 220, we end up with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

On to step 10:
480 divided by 86 is 5 with a remainder of 50.
Write down 5 as next digit of the result. 
Result so far: 4139.2325
If we take 430 away from 480, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

Step 11:
If we divide 500 by 86, we get 5 and a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 4139.23255
Deduct 430 from 500 and we're left with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

The final result is 4139.23255 with a remainder of 7e-05.