We look at the division of 16372658 by 815 
We want to figure out the number of times 16372658 can be divided by 815.

Advancing to step 1:
815 can be fit into 1 0 times, resulting in a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Grab the next digit (6) from the dividend, add it to 1, then carry on: 16 / 815

On to step 2:
When dividing 16 by 815, we get 0 with a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 16 after subtracting 0 from 16.
Fetch the next digit (3) from the dividend, attach it to 16 and continue: 163 / 815

Going ahead to step 3:
815 goes into 163 0 times with a remainder of 163.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 163 and we're left with 163.
Grab the next digit (7) from the dividend, add it to 163, then carry on: 1637 / 815

Going ahead to step 4:
The number 815 fits into 1637 2 times, leaving a remainder of 7.
The number 2 becomes the next digit in our result. 
Result so far: 2.0
The remainder is 7 after subtracting 1630 from 1637.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 815

Step 5:
815 goes into 72 0 times with a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 20.0
Subtract 0 from 72 to get 72.
Fetch the next digit (6) from the dividend, attach it to 72 and continue: 726 / 815

Let's proceed to step 6:
If we divide 726 by 815, we get 0 and a remainder of 726.
Write down 0 as next digit of the result. 
Result so far: 200.0
If we subtract 0 from 726, we get 726.
Bring next digit (5) of the dividend behind the 726 and repeat the process: 7265 / 815

Let's proceed to step 7:
815 goes into 7265 8 times with a remainder of 745.
Write down 8 as next digit of the result. 
Result so far: 2008.0
If we take 6520 away from 7265, we end up with 745.
Include the next digit (8) from the dividend after 745, then repeat: 7458 / 815

On to step 8:
815 can be fit into 7458 9 times, resulting in a remainder of 123.
Use 9 as the next digit of our solution. 
Result so far: 20089.0
If we take 7335 away from 7458, we end up with 123.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Advancing to step 9:
If we divide 1230 by 815, we get 1 and a remainder of 415.
Record the quotient 1 as the next digit in the result. 
Result so far: 20089.1
The remainder is 415 after subtracting 815 from 1230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4150, and continue the process.

Moving on to step 10:
If we divide 4150 by 815, we get 5 and a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 20089.15
If we subtract 4075 from 4150, we get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 11:
When dividing 750 by 815, we get 0 with a remainder of 750.
The number 0 becomes the next digit in our result. 
Result so far: 20089.15
If we subtract 0 from 750, we get 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

Moving on to step 12:
When dividing 7500 by 815, we get 9 with a remainder of 165.
Record the quotient 9 as the next digit in the result. 
Result so far: 20089.1509
Deduct 7335 from 7500 and we're left with 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Step 13:
When dividing 1650 by 815, we get 2 with a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 20089.15092
The remainder is 20 after subtracting 1630 from 1650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Going ahead to step 14:
815 goes into 200 0 times with a remainder of 200.
Record the quotient 0 as the next digit in the result. 
Result so far: 20089.15092
Subtract 0 from 200 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Advancing to step 15:
When dividing 2000 by 815, we get 2 with a remainder of 370.
Record the quotient 2 as the next digit in the result. 
Result so far: 20089.1509202
Subtracting 1630 from 2000 leaves us with 370.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3700, and continue the process.

Let's proceed to step 16:
If we divide 3700 by 815, we get 4 and a remainder of 440.
Write down 4 as next digit of the result. 
Result so far: 20089.15092024
Deduct 3260 from 3700 and we're left with 440.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4400, and continue the process.

The final outcome is 20089.15092024, with a leftover of 4.4e-07.