We're dividing 343844 by 86 
We want to divide 343844 by 86.

Going ahead to step 1:
The number 86 fits into 3 0 times, leaving 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.
Fetch the next digit (4) from the dividend, attach it to 3 and continue: 34 / 86

Let's proceed to step 2:
34 divided by 86 is 0 with a remainder of 34.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 34 and we're left with 34.
Append the next digit (3) from the dividend to 34 and continue with: 343 / 86

Advancing to step 3:
If we divide 343 by 86, we get 3 and a remainder of 85.
Use 3 as the next digit of our solution. 
Result so far: 3.0
The remainder is 85 after subtracting 258 from 343.
Append the next digit (8) from the dividend to 85 and continue with: 858 / 86

Going ahead to step 4:
If we divide 858 by 86, we get 9 and a remainder of 84.
Put 9 as the next digit of the answer. 
Result so far: 39.0
Subtract 774 from 858 to get 84.
Include the next digit (4) from the dividend after 84, then repeat: 844 / 86

Moving on to step 5:
844 divided by 86 is 9 with a remainder of 70.
Use 9 as the next digit of our solution. 
Result so far: 399.0
Subtract 774 from 844 to get 70.
Append the next digit (4) from the dividend to 70 and continue with: 704 / 86

Step 6:
704 divided by 86 is 8 with a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 3998.0
If we subtract 688 from 704, we get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Advancing to step 7:
When dividing 160 by 86, we get 1 with a remainder of 74.
Put 1 as the next digit of the answer. 
Result so far: 3998.1
If we take 86 away from 160, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Let's proceed to step 8:
The number 86 fits into 740 8 times, leaving a remainder of 52.
The next digit of our result is 8. 
Result so far: 3998.18
If we subtract 688 from 740, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Going ahead to step 9:
The number 86 fits into 520 6 times, leaving a remainder of 4.
The number 6 becomes the next digit in our result. 
Result so far: 3998.186
If we subtract 516 from 520, we get 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

On to step 10:
86 can be fit into 40 0 times, resulting in a remainder of 40.
Use 0 as the next digit of our solution. 
Result so far: 3998.186
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 11:
86 can be fit into 400 4 times, resulting in a remainder of 56.
Record the quotient 4 as the next digit in the result. 
Result so far: 3998.18604
If we take 344 away from 400, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 12:
If we divide 560 by 86, we get 6 and a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 3998.186046
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.

Moving on to step 13:
When dividing 440 by 86, we get 5 with a remainder of 10.
Use 5 as the next digit of our solution. 
Result so far: 3998.1860465
Subtracting 430 from 440 leaves us 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.

Advancing to step 14:
86 can be fit into 100 1 times, resulting in a remainder of 14.
Put 1 as the next digit of the answer. 
Result so far: 3998.18604651
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.

The final result is 3998.18604651 with a remainder of 1.4e-08.