39300678 ÷ 831 
We want to figure out the number of times 39300678 can be divided by 831.

On to step 1:
831 goes into 3 0 times with a remainder of 3.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (9) from the dividend to 3 and continue with: 39 / 831

Going ahead to step 2:
If we divide 39 by 831, we get 0 and a remainder of 39.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 39 and we're left with 39.
Fetch the next digit (3) from the dividend, attach it to 39 and continue: 393 / 831

Let's proceed to step 3:
831 can be fit into 393 0 times, resulting in a remainder of 393.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 393 after subtracting 0 from 393.
Append the next digit (0) from the dividend to 393 and continue with: 3930 / 831

Step 4:
3930 divided by 831 is 4 with a remainder of 606.
Put 4 as the next digit of the answer. 
Result so far: 4.0
Subtracting 3324 from 3930 leaves us with 606.
Fetch the next digit (0) from the dividend, attach it to 606 and continue: 6060 / 831

Moving on to step 5:
When dividing 6060 by 831, we get 7 with a remainder of 243.
The next digit of our result is 7. 
Result so far: 47.0
If we subtract 5817 from 6060, we get 243.
Grab the next digit (6) from the dividend, add it to 243, then carry on: 2436 / 831

Advancing to step 6:
The number 831 fits into 2436 2 times, leaving a remainder of 774.
Use 2 as the next digit of our solution. 
Result so far: 472.0
Deduct 1662 from 2436 and we're left with 774.
Append the next digit (7) from the dividend to 774 and continue with: 7747 / 831

Advancing to step 7:
7747 divided by 831 is 9 with a remainder of 268.
The next digit of our result is 9. 
Result so far: 4729.0
Subtract 7479 from 7747 to get 268.
Fetch the next digit (8) from the dividend, attach it to 268 and continue: 2688 / 831

Step 8:
831 goes into 2688 3 times with a remainder of 195.
Record the quotient 3 as the next digit in the result. 
Result so far: 47293.0
The remainder is 195 after subtracting 2493 from 2688.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1950, and continue the process.

Step 9:
831 can be fit into 1950 2 times, resulting in a remainder of 288.
Write down 2 as next digit of the result. 
Result so far: 47293.2
Subtracting 1662 from 1950 leaves us with 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Going ahead to step 10:
831 goes into 2880 3 times with a remainder of 387.
Write down 3 as next digit of the result. 
Result so far: 47293.23
Deduct 2493 from 2880 and we're left with 387.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3870, and continue the process.

Going ahead to step 11:
831 goes into 3870 4 times with a remainder of 546.
Use 4 as the next digit of our solution. 
Result so far: 47293.234
Subtracting 3324 from 3870 leaves us with 546.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

Let's proceed to step 12:
831 can be fit into 5460 6 times, resulting in a remainder of 474.
The number 6 becomes the next digit in our result. 
Result so far: 47293.2346
If we subtract 4986 from 5460, we get 474.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4740, and continue the process.

Moving on to step 13:
If we divide 4740 by 831, we get 5 and a remainder of 585.
Put 5 as the next digit of the answer. 
Result so far: 47293.23465
Subtracting 4155 from 4740 leaves us with 585.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5850, and continue the process.

On to step 14:
If we divide 5850 by 831, we get 7 and a remainder of 33.
The number 7 becomes the next digit in our result. 
Result so far: 47293.234657
Subtract 5817 from 5850 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Step 15:
330 divided by 831 is 0 with a remainder of 330.
Use 0 as the next digit of our solution. 
Result so far: 47293.234657
Deduct 0 from 330 and we're left with 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3300, and continue the process.

On to step 16:
When dividing 3300 by 831, we get 3 with a remainder of 807.
The next digit of our result is 3. 
Result so far: 47293.23465703
If we take 2493 away from 3300, we end up with 807.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8070, and continue the process.

Our division results in 47293.23465703 with a remaining 8.07e-07.