We're dividing 307739 by 86 
Our goal is to divide 307739 by 86.

On to step 1:
3 divided by 86 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Take the next digit (0) from the dividend and append it to 3, then repeat: 30 / 86

Step 2:
The number 86 fits into 30 0 times, leaving a remainder of 30.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 30 leaves us with 30.
Include the next digit (7) from the dividend after 30, then repeat: 307 / 86

Advancing to step 3:
The number 86 fits into 307 3 times, leaving a remainder of 49.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 258 from 307 to get 49.
Append the next digit (7) from the dividend to 49 and continue with: 497 / 86

Step 4:
The number 86 fits into 497 5 times, leaving a remainder of 67.
Record the quotient 5 as the next digit in the result. 
Result so far: 35.0
Deduct 430 from 497 and we're left with 67.
Include the next digit (3) from the dividend after 67, then repeat: 673 / 86

Moving on to step 5:
If we divide 673 by 86, we get 7 and a remainder of 71.
The next digit of our result is 7. 
Result so far: 357.0
The remainder is 71 after subtracting 602 from 673.
Take the next digit (9) from the dividend and append it to 71, then repeat: 719 / 86

On to step 6:
86 can be fit into 719 8 times, resulting in a remainder of 31.
Write down 8 as next digit of the result. 
Result so far: 3578.0
Subtract 688 from 719 to get 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

Moving on to step 7:
If we divide 310 by 86, we get 3 and a remainder of 52.
Record the quotient 3 as the next digit in the result. 
Result so far: 3578.3
If we subtract 258 from 310, 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 8:
86 can be fit into 520 6 times, resulting in a remainder of 4.
The next digit of our result is 6. 
Result so far: 3578.36
Subtracting 516 from 520 leaves us with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 9:
The number 86 fits into 40 0 times, leaving a remainder of 40.
Put 0 as the next digit of the answer. 
Result so far: 3578.36
Deduct 0 from 40 and we're left with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Advancing to step 10:
86 can be fit into 400 4 times, resulting in a remainder of 56.
The next digit of our result is 4. 
Result so far: 3578.3604
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.

Moving on to step 11:
560 divided by 86 is 6 with a remainder of 44.
Record the quotient 6 as the next digit in the result. 
Result so far: 3578.36046
Subtract 516 from 560 to get 44.
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 12:
The number 86 fits into 440 5 times, leaving a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 3578.360465
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.

Moving on to step 13:
When dividing 100 by 86, we get 1 with a remainder of 14.
The next digit of our result is 1. 
Result so far: 3578.3604651
Subtracting 86 from 100 leaves us 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.

Advancing to step 14:
86 can be fit into 140 1 times, resulting in a remainder of 54.
Record the quotient 1 as the next digit in the result. 
Result so far: 3578.36046511
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 3578.36046511 with a remainder of 5.4e-08.