We look at the division of 18391815 by 838 
We want to figure out the number of times 18391815 can be divided by 838.

On to step 1:
If we divide 1 by 838, we get 0 and a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Append the next digit (8) from the dividend to 1 and continue with: 18 / 838

Advancing to step 2:
If we divide 18 by 838, we get 0 and a remainder of 18.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 18 and we're left with 18.
Bring next digit (3) of the dividend behind the 18 and repeat the process: 183 / 838

Step 3:
183 divided by 838 is 0 with a remainder of 183.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 183 after subtracting 0 from 183.
Include the next digit (9) from the dividend after 183, then repeat: 1839 / 838

Moving on to step 4:
If we divide 1839 by 838, we get 2 and a remainder of 163.
The next digit of our result is 2. 
Result so far: 2.0
If we take 1676 away from 1839, we end up with 163.
Grab the next digit (1) from the dividend, add it to 163, then carry on: 1631 / 838

On to step 5:
The number 838 fits into 1631 1 times, leaving a remainder of 793.
Use 1 as the next digit of our solution. 
Result so far: 21.0
Subtract 838 from 1631 to get 793.
Take the next digit (8) from the dividend and append it to 793, then repeat: 7938 / 838

On to step 6:
If we divide 7938 by 838, we get 9 and a remainder of 396.
The next digit of our result is 9. 
Result so far: 219.0
Deduct 7542 from 7938 and we're left with 396.
Fetch the next digit (1) from the dividend, attach it to 396 and continue: 3961 / 838

Let's proceed to step 7:
838 goes into 3961 4 times with a remainder of 609.
The next digit of our result is 4. 
Result so far: 2194.0
Subtracting 3352 from 3961 leaves us with 609.
Grab the next digit (5) from the dividend, add it to 609, then carry on: 6095 / 838

Moving on to step 8:
6095 divided by 838 is 7 with a remainder of 229.
Put 7 as the next digit of the answer. 
Result so far: 21947.0
Subtract 5866 from 6095 to get 229.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2290, and continue the process.

On to step 9:
2290 divided by 838 is 2 with a remainder of 614.
The next digit of our result is 2. 
Result so far: 21947.2
Subtract 1676 from 2290 to get 614.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6140, and continue the process.

On to step 10:
When dividing 6140 by 838, we get 7 with a remainder of 274.
Put 7 as the next digit of the answer. 
Result so far: 21947.27
If we take 5866 away from 6140, we end up with 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

On to step 11:
838 goes into 2740 3 times with a remainder of 226.
The number 3 becomes the next digit in our result. 
Result so far: 21947.273
The remainder is 226 after subtracting 2514 from 2740.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

On to step 12:
If we divide 2260 by 838, we get 2 and a remainder of 584.
Record the quotient 2 as the next digit in the result. 
Result so far: 21947.2732
If we take 1676 away from 2260, we end up with 584.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5840, and continue the process.

Let's proceed to step 13:
When dividing 5840 by 838, we get 6 with a remainder of 812.
Put 6 as the next digit of the answer. 
Result so far: 21947.27326
If we take 5028 away from 5840, we end up with 812.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8120, and continue the process.

Advancing to step 14:
If we divide 8120 by 838, we get 9 and a remainder of 578.
Put 9 as the next digit of the answer. 
Result so far: 21947.273269
Subtract 7542 from 8120 to get 578.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5780, and continue the process.

Going ahead to step 15:
When dividing 5780 by 838, we get 6 with a remainder of 752.
The number 6 becomes the next digit in our result. 
Result so far: 21947.2732696
Subtract 5028 from 5780 to get 752.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7520, and continue the process.

Going ahead to step 16:
838 goes into 7520 8 times with a remainder of 816.
Use 8 as the next digit of our solution. 
Result so far: 21947.27326968
If we subtract 6704 from 7520, we get 816.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8160, and continue the process.

After the division, we end up with 21947.27326968 and a remainder of 8.16e-07.