We look at the division of 17499799 by 243 
We want to divide 17499799 by 243.

Step 1:
1 divided by 243 is 0 with 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.
Bring next digit (7) of the dividend behind the 1 and repeat the process: 17 / 243

Let's proceed to step 2:
17 divided by 243 is 0 with a remainder of 17.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 17, we end up with 17.
Fetch the next digit (4) from the dividend, attach it to 17 and continue: 174 / 243

Let's proceed to step 3:
243 goes into 174 0 times with a remainder of 174.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 174, we get 174.
Fetch the next digit (9) from the dividend, attach it to 174 and continue: 1749 / 243

Going ahead to step 4:
243 goes into 1749 7 times with a remainder of 48.
Put 7 as the next digit of the answer. 
Result so far: 7.0
If we subtract 1701 from 1749, we get 48.
Bring next digit (9) of the dividend behind the 48 and repeat the process: 489 / 243

On to step 5:
489 divided by 243 is 2 with a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 72.0
Subtracting 486 from 489 leaves us with 3.
Fetch the next digit (7) from the dividend, attach it to 3 and continue: 37 / 243

Going ahead to step 6:
If we divide 37 by 243, we get 0 and a remainder of 37.
The number 0 becomes the next digit in our result. 
Result so far: 720.0
Deduct 0 from 37 and we're left with 37.
Fetch the next digit (9) from the dividend, attach it to 37 and continue: 379 / 243

Moving on to step 7:
379 divided by 243 is 1 with a remainder of 136.
The number 1 becomes the next digit in our result. 
Result so far: 7201.0
If we take 243 away from 379, we end up with 136.
Bring next digit (9) of the dividend behind the 136 and repeat the process: 1369 / 243

Advancing to step 8:
1369 divided by 243 is 5 with a remainder of 154.
Write down 5 as next digit of the result. 
Result so far: 72015.0
If we take 1215 away from 1369, we end up with 154.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1540, and continue the process.

Moving on to step 9:
If we divide 1540 by 243, we get 6 and a remainder of 82.
Put 6 as the next digit of the answer. 
Result so far: 72015.6
Deduct 1458 from 1540 and we're left with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 10:
If we divide 820 by 243, we get 3 and a remainder of 91.
Record the quotient 3 as the next digit in the result. 
Result so far: 72015.63
If we subtract 729 from 820, we get 91.
Since there are no more digits in the dividend, we add a zero to the remainder making it 910, and continue the process.

Let's proceed to step 11:
When dividing 910 by 243, we get 3 with a remainder of 181.
The number 3 becomes the next digit in our result. 
Result so far: 72015.633
If we subtract 729 from 910, we get 181.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1810, and continue the process.

After the division, we end up with 72015.633 and a remainder of 0.0181.