Let's divide 16172229 by 815
We want to figure out the number of times 16172229 can be divided by 815.

On to step 1:
1 divided by 815 is 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 1 and we're left with 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 815

Going ahead to step 2:
16 divided by 815 is 0 with a remainder of 16.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 16 to get 16.
Take the next digit (1) from the dividend and append it to 16, then repeat: 161 / 815

Let's proceed to step 3:
815 goes into 161 0 times with a remainder of 161.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 161 to get 161.
Fetch the next digit (7) from the dividend, attach it to 161 and continue: 1617 / 815

Advancing to step 4:
When dividing 1617 by 815, we get 1 with a remainder of 802.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 815 from 1617 to get 802.
Take the next digit (2) from the dividend and append it to 802, then repeat: 8022 / 815

Let's proceed to step 5:
The number 815 fits into 8022 9 times, leaving a remainder of 687.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Deduct 7335 from 8022 and we're left with 687.
Include the next digit (2) from the dividend after 687, then repeat: 6872 / 815

Moving on to step 6:
If we divide 6872 by 815, we get 8 and a remainder of 352.
Record the quotient 8 as the next digit in the result. 
Result so far: 198.0
The remainder is 352 after subtracting 6520 from 6872.
Grab the next digit (2) from the dividend, add it to 352, then carry on: 3522 / 815

Moving on to step 7:
The number 815 fits into 3522 4 times, leaving a remainder of 262.
Use 4 as the next digit of our solution. 
Result so far: 1984.0
If we subtract 3260 from 3522, we get 262.
Append the next digit (9) from the dividend to 262 and continue with: 2629 / 815

On to step 8:
The number 815 fits into 2629 3 times, leaving a remainder of 184.
Write down 3 as next digit of the result. 
Result so far: 19843.0
Subtracting 2445 from 2629 leaves us with 184.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1840, and continue the process.

Advancing to step 9:
815 can be fit into 1840 2 times, resulting in a remainder of 210.
Write down 2 as next digit of the result. 
Result so far: 19843.2
If we take 1630 away from 1840, we end up with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Going ahead to step 10:
If we divide 2100 by 815, we get 2 and a remainder of 470.
The number 2 becomes the next digit in our result. 
Result so far: 19843.22
The remainder is 470 after subtracting 1630 from 2100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4700, and continue the process.

Our division results in 19843.22 with a remaining 0.47.