We look at the division of 90353917 by 243 
We want to figure out the number of times 90353917 can be divided by 243.

On to step 1:
243 goes into 9 0 times with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Append the next digit (0) from the dividend to 9 and continue with: 90 / 243

On to step 2:
When dividing 90 by 243, we get 0 with a remainder of 90.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 90 to get 90.
Bring next digit (3) of the dividend behind the 90 and repeat the process: 903 / 243

Going ahead to step 3:
243 can be fit into 903 3 times, resulting in a remainder of 174.
Record the quotient 3 as the next digit in the result. 
Result so far: 3.0
Subtract 729 from 903 to get 174.
Take the next digit (5) from the dividend and append it to 174, then repeat: 1745 / 243

Moving on to step 4:
1745 divided by 243 is 7 with a remainder of 44.
Put 7 as the next digit of the answer. 
Result so far: 37.0
The remainder is 44 after subtracting 1701 from 1745.
Append the next digit (3) from the dividend to 44 and continue with: 443 / 243

On to step 5:
243 can be fit into 443 1 times, resulting in a remainder of 200.
Write down 1 as next digit of the result. 
Result so far: 371.0
If we subtract 243 from 443, we get 200.
Bring next digit (9) of the dividend behind the 200 and repeat the process: 2009 / 243

Step 6:
If we divide 2009 by 243, we get 8 and a remainder of 65.
Write down 8 as next digit of the result. 
Result so far: 3718.0
Subtract 1944 from 2009 to get 65.
Bring next digit (1) of the dividend behind the 65 and repeat the process: 651 / 243

Moving on to step 7:
651 divided by 243 is 2 with a remainder of 165.
The number 2 becomes the next digit in our result. 
Result so far: 37182.0
Deduct 486 from 651 and we're left with 165.
Fetch the next digit (7) from the dividend, attach it to 165 and continue: 1657 / 243

Let's proceed to step 8:
1657 divided by 243 is 6 with a remainder of 199.
The next digit of our result is 6. 
Result so far: 371826.0
Deduct 1458 from 1657 and we're left with 199.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1990, and continue the process.

Advancing to step 9:
1990 divided by 243 is 8 with a remainder of 46.
Write down 8 as next digit of the result. 
Result so far: 371826.8
If we subtract 1944 from 1990, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Let's proceed to step 10:
The number 243 fits into 460 1 times, leaving a remainder of 217.
Use 1 as the next digit of our solution. 
Result so far: 371826.81
Subtracting 243 from 460 leaves us with 217.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2170, and continue the process.

On to step 11:
The number 243 fits into 2170 8 times, leaving a remainder of 226.
Record the quotient 8 as the next digit in the result. 
Result so far: 371826.818
If we subtract 1944 from 2170, we get 226.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2260, and continue the process.

Advancing to step 12:
If we divide 2260 by 243, we get 9 and a remainder of 73.
Put 9 as the next digit of the answer. 
Result so far: 371826.8189
Subtracting 2187 from 2260 leaves us with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Advancing to step 13:
243 can be fit into 730 3 times, resulting in a remainder of 1.
The next digit of our result is 3. 
Result so far: 371826.81893
If we take 729 away from 730, we end up with 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Going ahead to step 14:
10 divided by 243 is 0 with a remainder of 10.
The next digit of our result is 0. 
Result so far: 371826.81893
Subtract 0 from 10 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 15:
243 goes into 100 0 times with a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 371826.81893
Subtract 0 from 100 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Our division results in 371826.81893 with a remaining 1e-06.