We're dividing 18395868 by 815 
We want to figure out the number of times 18395868 can be divided by 815.

Going ahead to step 1:
If we divide 1 by 815, we get 0 and a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 815

Going ahead to step 2:
18 divided by 815 is 0 with a remainder of 18.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 18 to get 18.
Take the next digit (3) from the dividend and append it to 18, then repeat: 183 / 815

Step 3:
If we divide 183 by 815, we get 0 and a remainder of 183.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 183, we get 183.
Grab the next digit (9) from the dividend, add it to 183, then carry on: 1839 / 815

Advancing to step 4:
815 goes into 1839 2 times with a remainder of 209.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 1630 from 1839 and we're left with 209.
Bring next digit (5) of the dividend behind the 209 and repeat the process: 2095 / 815

Going ahead to step 5:
The number 815 fits into 2095 2 times, leaving a remainder of 465.
Record the quotient 2 as the next digit in the result. 
Result so far: 22.0
If we subtract 1630 from 2095, we get 465.
Grab the next digit (8) from the dividend, add it to 465, then carry on: 4658 / 815

Let's proceed to step 6:
The number 815 fits into 4658 5 times, leaving a remainder of 583.
Use 5 as the next digit of our solution. 
Result so far: 225.0
Subtract 4075 from 4658 to get 583.
Take the next digit (6) from the dividend and append it to 583, then repeat: 5836 / 815

Going ahead to step 7:
The number 815 fits into 5836 7 times, leaving a remainder of 131.
Put 7 as the next digit of the answer. 
Result so far: 2257.0
If we subtract 5705 from 5836, we get 131.
Include the next digit (8) from the dividend after 131, then repeat: 1318 / 815

Step 8:
815 can be fit into 1318 1 times, resulting in a remainder of 503.
The number 1 becomes the next digit in our result. 
Result so far: 22571.0
Subtract 815 from 1318 to get 503.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5030, and continue the process.

Advancing to step 9:
If we divide 5030 by 815, we get 6 and a remainder of 140.
Put 6 as the next digit of the answer. 
Result so far: 22571.6
If we take 4890 away from 5030, we end up with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Advancing to step 10:
If we divide 1400 by 815, we get 1 and a remainder of 585.
Write down 1 as next digit of the result. 
Result so far: 22571.61
If we subtract 815 from 1400, we get 585.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5850, and continue the process.

Advancing to step 11:
815 can be fit into 5850 7 times, resulting in a remainder of 145.
Record the quotient 7 as the next digit in the result. 
Result so far: 22571.617
Subtracting 5705 from 5850 leaves us with 145.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1450, and continue the process.

On to step 12:
815 goes into 1450 1 times with a remainder of 635.
The next digit of our result is 1. 
Result so far: 22571.6171
The remainder is 635 after subtracting 815 from 1450.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6350, and continue the process.

Advancing to step 13:
The number 815 fits into 6350 7 times, leaving a remainder of 645.
Put 7 as the next digit of the answer. 
Result so far: 22571.61717
Deduct 5705 from 6350 and we're left with 645.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6450, and continue the process.

Advancing to step 14:
815 can be fit into 6450 7 times, resulting in a remainder of 745.
Write down 7 as next digit of the result. 
Result so far: 22571.617177
Deduct 5705 from 6450 and we're left with 745.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7450, and continue the process.

The final outcome is 22571.617177, with a leftover of 7.45e-05.