15864078 ÷ 812 
We're looking to find how many times 812 goes into 15864078.

Going ahead to step 1:
If we divide 1 by 812, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 1, we get 1.
Take the next digit (5) from the dividend and append it to 1, then repeat: 15 / 812

On to step 2:
When dividing 15 by 812, we get 0 with a remainder of 15.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Append the next digit (8) from the dividend to 15 and continue with: 158 / 812

Let's proceed to step 3:
The number 812 fits into 158 0 times, leaving a remainder of 158.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 158 and we're left with 158.
Fetch the next digit (6) from the dividend, attach it to 158 and continue: 1586 / 812

On to step 4:
1586 divided by 812 is 1 with a remainder of 774.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we subtract 812 from 1586, we get 774.
Take the next digit (4) from the dividend and append it to 774, then repeat: 7744 / 812

Advancing to step 5:
7744 divided by 812 is 9 with a remainder of 436.
Put 9 as the next digit of the answer. 
Result so far: 19.0
Deduct 7308 from 7744 and we're left with 436.
Take the next digit (0) from the dividend and append it to 436, then repeat: 4360 / 812

Step 6:
4360 divided by 812 is 5 with a remainder of 300.
The next digit of our result is 5. 
Result so far: 195.0
If we take 4060 away from 4360, we end up with 300.
Bring next digit (7) of the dividend behind the 300 and repeat the process: 3007 / 812

Going ahead to step 7:
If we divide 3007 by 812, we get 3 and a remainder of 571.
Record the quotient 3 as the next digit in the result. 
Result so far: 1953.0
If we take 2436 away from 3007, we end up with 571.
Grab the next digit (8) from the dividend, add it to 571, then carry on: 5718 / 812

Going ahead to step 8:
812 can be fit into 5718 7 times, resulting in a remainder of 34.
Write down 7 as next digit of the result. 
Result so far: 19537.0
If we take 5684 away from 5718, we end up with 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Let's proceed to step 9:
If we divide 340 by 812, we get 0 and a remainder of 340.
The number 0 becomes the next digit in our result. 
Result so far: 19537.0
Deduct 0 from 340 and we're left with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

Moving on to step 10:
812 can be fit into 3400 4 times, resulting in a remainder of 152.
Record the quotient 4 as the next digit in the result. 
Result so far: 19537.04
If we subtract 3248 from 3400, we get 152.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1520, and continue the process.

Going ahead to step 11:
When dividing 1520 by 812, we get 1 with a remainder of 708.
Write down 1 as next digit of the result. 
Result so far: 19537.041
Deduct 812 from 1520 and we're left with 708.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7080, and continue the process.

On to step 12:
When dividing 7080 by 812, we get 8 with a remainder of 584.
The next digit of our result is 8. 
Result so far: 19537.0418
If we subtract 6496 from 7080, we get 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

Step 13:
When dividing 5840 by 812, we get 7 with a remainder of 156.
Write down 7 as next digit of the result. 
Result so far: 19537.04187
If we take 5684 away from 5840, we end up with 156.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1560, and continue the process.

Step 14:
812 can be fit into 1560 1 times, resulting in a remainder of 748.
The next digit of our result is 1. 
Result so far: 19537.041871
If we subtract 812 from 1560, we get 748.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7480, and continue the process.

Step 15:
7480 divided by 812 is 9 with a remainder of 172.
Put 9 as the next digit of the answer. 
Result so far: 19537.0418719
The remainder is 172 after subtracting 7308 from 7480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1720, and continue the process.

Moving on to step 16:
812 can be fit into 1720 2 times, resulting in a remainder of 96.
The number 2 becomes the next digit in our result. 
Result so far: 19537.04187192
Subtract 1624 from 1720 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

The final result is 19537.04187192 with a remainder of 9.6e-08.