We divide 343875 by 86
Our goal is to divide 343875 by 86.

Step 1:
86 goes into 3 0 times with a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (4) from the dividend after 3, then repeat: 34 / 86

Let's proceed to step 2:
If we divide 34 by 86, we get 0 and a remainder of 34.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 34, we end up with 34.
Fetch the next digit (3) from the dividend, attach it to 34 and continue: 343 / 86

Step 3:
If we divide 343 by 86, we get 3 and a remainder of 85.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Deduct 258 from 343 and we're left with 85.
Grab the next digit (8) from the dividend, add it to 85, then carry on: 858 / 86

Advancing to step 4:
86 goes into 858 9 times with a remainder of 84.
Put 9 as the next digit of the answer. 
Result so far: 39.0
If we take 774 away from 858, we end up with 84.
Bring next digit (7) of the dividend behind the 84 and repeat the process: 847 / 86

Let's proceed to step 5:
847 divided by 86 is 9 with a remainder of 73.
Record the quotient 9 as the next digit in the result. 
Result so far: 399.0
The remainder is 73 after subtracting 774 from 847.
Include the next digit (5) from the dividend after 73, then repeat: 735 / 86

Moving on to step 6:
If we divide 735 by 86, we get 8 and a remainder of 47.
Write down 8 as next digit of the result. 
Result so far: 3998.0
Subtracting 688 from 735 leaves us with 47.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

Advancing to step 7:
86 can be fit into 470 5 times, resulting in a remainder of 40.
Put 5 as the next digit of the answer. 
Result so far: 3998.5
If we subtract 430 from 470, we get 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 8:
400 divided by 86 is 4 with a remainder of 56.
Put 4 as the next digit of the answer. 
Result so far: 3998.54
Subtracting 344 from 400 leaves us 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.

Step 9:
When dividing 560 by 86, we get 6 with a remainder of 44.
Write down 6 as next digit of the result. 
Result so far: 3998.546
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 10:
When dividing 440 by 86, we get 5 with a remainder of 10.
Write down 5 as next digit of the result. 
Result so far: 3998.5465
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.

Let's proceed to step 11:
86 can be fit into 100 1 times, resulting in a remainder of 14.
The next digit of our result is 1. 
Result so far: 3998.54651
Subtract 86 from 100 to get 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 12:
If we divide 140 by 86, we get 1 and a remainder of 54.
Write down 1 as next digit of the result. 
Result so far: 3998.546511
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 result is 3998.546511 with a remainder of 5.4e-06.