Let's divide 31399919 by 812
Our goal is to divide 31399919 by 812.

On to step 1:
812 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.
Include the next digit (1) from the dividend after 3, then repeat: 31 / 812

Step 2:
If we divide 31 by 812, we get 0 and a remainder of 31.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 31 and we're left with 31.
Take the next digit (3) from the dividend and append it to 31, then repeat: 313 / 812

Let's proceed to step 3:
If we divide 313 by 812, we get 0 and a remainder of 313.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 313 after subtracting 0 from 313.
Bring next digit (9) of the dividend behind the 313 and repeat the process: 3139 / 812

Going ahead to step 4:
The number 812 fits into 3139 3 times, leaving a remainder of 703.
Use 3 as the next digit of our solution. 
Result so far: 3.0
Subtracting 2436 from 3139 leaves us with 703.
Include the next digit (9) from the dividend after 703, then repeat: 7039 / 812

Advancing to step 5:
812 can be fit into 7039 8 times, resulting in a remainder of 543.
Use 8 as the next digit of our solution. 
Result so far: 38.0
If we subtract 6496 from 7039, we get 543.
Append the next digit (9) from the dividend to 543 and continue with: 5439 / 812

Going ahead to step 6:
The number 812 fits into 5439 6 times, leaving a remainder of 567.
The next digit of our result is 6. 
Result so far: 386.0
The remainder is 567 after subtracting 4872 from 5439.
Grab the next digit (1) from the dividend, add it to 567, then carry on: 5671 / 812

Step 7:
5671 divided by 812 is 6 with a remainder of 799.
Record the quotient 6 as the next digit in the result. 
Result so far: 3866.0
Deduct 4872 from 5671 and we're left with 799.
Include the next digit (9) from the dividend after 799, then repeat: 7999 / 812

Advancing to step 8:
When dividing 7999 by 812, we get 9 with a remainder of 691.
Put 9 as the next digit of the answer. 
Result so far: 38669.0
Subtract 7308 from 7999 to get 691.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6910, and continue the process.

Going ahead to step 9:
The number 812 fits into 6910 8 times, leaving a remainder of 414.
The number 8 becomes the next digit in our result. 
Result so far: 38669.8
Subtract 6496 from 6910 to get 414.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4140, and continue the process.

Advancing to step 10:
If we divide 4140 by 812, we get 5 and a remainder of 80.
Use 5 as the next digit of our solution. 
Result so far: 38669.85
Subtract 4060 from 4140 to get 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

On to step 11:
If we divide 800 by 812, we get 0 and a remainder of 800.
The next digit of our result is 0. 
Result so far: 38669.85
Deduct 0 from 800 and we're left with 800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8000, and continue the process.

Step 12:
If we divide 8000 by 812, we get 9 and a remainder of 692.
The number 9 becomes the next digit in our result. 
Result so far: 38669.8509
Subtract 7308 from 8000 to get 692.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6920, and continue the process.

Step 13:
The number 812 fits into 6920 8 times, leaving a remainder of 424.
Use 8 as the next digit of our solution. 
Result so far: 38669.85098
If we take 6496 away from 6920, we end up with 424.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4240, and continue the process.

Going ahead to step 14:
812 goes into 4240 5 times with a remainder of 180.
The number 5 becomes the next digit in our result. 
Result so far: 38669.850985
Subtract 4060 from 4240 to get 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1800, and continue the process.

Going ahead to step 15:
1800 divided by 812 is 2 with a remainder of 176.
The number 2 becomes the next digit in our result. 
Result so far: 38669.8509852
The remainder is 176 after subtracting 1624 from 1800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

Advancing to step 16:
The number 812 fits into 1760 2 times, leaving a remainder of 136.
Put 2 as the next digit of the answer. 
Result so far: 38669.85098522
Subtract 1624 from 1760 to get 136.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

The quotient of the division is 38669.85098522, and the remainder is 1.36e-07.