We look at the division of 86539802 by 839 
Our goal is to divide 86539802 by 839.

On to step 1:
If we divide 8 by 839, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (6) from the dividend, attach it to 8 and continue: 86 / 839

Going ahead to step 2:
839 goes into 86 0 times with a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Include the next digit (5) from the dividend after 86, then repeat: 865 / 839

Step 3:
The number 839 fits into 865 1 times, leaving a remainder of 26.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 839 from 865, we get 26.
Fetch the next digit (3) from the dividend, attach it to 26 and continue: 263 / 839

Moving on to step 4:
When dividing 263 by 839, we get 0 with a remainder of 263.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we subtract 0 from 263, we get 263.
Take the next digit (9) from the dividend and append it to 263, then repeat: 2639 / 839

Let's proceed to step 5:
839 can be fit into 2639 3 times, resulting in a remainder of 122.
The next digit of our result is 3. 
Result so far: 103.0
Deduct 2517 from 2639 and we're left with 122.
Append the next digit (8) from the dividend to 122 and continue with: 1228 / 839

Going ahead to step 6:
1228 divided by 839 is 1 with a remainder of 389.
Record the quotient 1 as the next digit in the result. 
Result so far: 1031.0
Deduct 839 from 1228 and we're left with 389.
Grab the next digit (0) from the dividend, add it to 389, then carry on: 3890 / 839

Going ahead to step 7:
If we divide 3890 by 839, we get 4 and a remainder of 534.
Record the quotient 4 as the next digit in the result. 
Result so far: 10314.0
Subtract 3356 from 3890 to get 534.
Include the next digit (2) from the dividend after 534, then repeat: 5342 / 839

Step 8:
839 goes into 5342 6 times with a remainder of 308.
Write down 6 as next digit of the result. 
Result so far: 103146.0
If we take 5034 away from 5342, we end up with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Step 9:
If we divide 3080 by 839, we get 3 and a remainder of 563.
Use 3 as the next digit of our solution. 
Result so far: 103146.3
If we subtract 2517 from 3080, we get 563.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5630, and continue the process.

Going ahead to step 10:
If we divide 5630 by 839, we get 6 and a remainder of 596.
The number 6 becomes the next digit in our result. 
Result so far: 103146.36
Subtracting 5034 from 5630 leaves us with 596.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5960, and continue the process.

Step 11:
The number 839 fits into 5960 7 times, leaving a remainder of 87.
The next digit of our result is 7. 
Result so far: 103146.367
If we subtract 5873 from 5960, we get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Step 12:
870 divided by 839 is 1 with a remainder of 31.
Use 1 as the next digit of our solution. 
Result so far: 103146.3671
If we subtract 839 from 870, we 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.

Let's proceed to step 13:
If we divide 310 by 839, we get 0 and a remainder of 310.
Write down 0 as next digit of the result. 
Result so far: 103146.3671
Subtracting 0 from 310 leaves us with 310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3100, and continue the process.

Moving on to step 14:
839 can be fit into 3100 3 times, resulting in a remainder of 583.
Record the quotient 3 as the next digit in the result. 
Result so far: 103146.367103
Subtract 2517 from 3100 to get 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

On to step 15:
If we divide 5830 by 839, we get 6 and a remainder of 796.
Write down 6 as next digit of the result. 
Result so far: 103146.3671036
Deduct 5034 from 5830 and we're left with 796.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7960, and continue the process.

Let's proceed to step 16:
839 goes into 7960 9 times with a remainder of 409.
The next digit of our result is 9. 
Result so far: 103146.36710369
Subtracting 7551 from 7960 leaves us with 409.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4090, and continue the process.

The quotient of the division is 103146.36710369, and the remainder is 4.09e-07.