90531838 ÷ 221 
Our goal is to divide 90531838 by 221.

Step 1:
9 divided by 221 is 0 with a remainder of 9.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 9, we end up with 9.
Include the next digit (0) from the dividend after 9, then repeat: 90 / 221

Moving on to step 2:
When dividing 90 by 221, we get 0 with a remainder of 90.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 90, we end up with 90.
Append the next digit (5) from the dividend to 90 and continue with: 905 / 221

On to step 3:
221 can be fit into 905 4 times, resulting in a remainder of 21.
The number 4 becomes the next digit in our result. 
Result so far: 4.0
Deduct 884 from 905 and we're left with 21.
Bring next digit (3) of the dividend behind the 21 and repeat the process: 213 / 221

Advancing to step 4:
The number 221 fits into 213 0 times, leaving a remainder of 213.
Record the quotient 0 as the next digit in the result. 
Result so far: 40.0
The remainder is 213 after subtracting 0 from 213.
Fetch the next digit (1) from the dividend, attach it to 213 and continue: 2131 / 221

Moving on to step 5:
When dividing 2131 by 221, we get 9 with a remainder of 142.
Put 9 as the next digit of the answer. 
Result so far: 409.0
The remainder is 142 after subtracting 1989 from 2131.
Take the next digit (8) from the dividend and append it to 142, then repeat: 1428 / 221

Going ahead to step 6:
When dividing 1428 by 221, we get 6 with a remainder of 102.
Record the quotient 6 as the next digit in the result. 
Result so far: 4096.0
Subtracting 1326 from 1428 leaves us with 102.
Take the next digit (3) from the dividend and append it to 102, then repeat: 1023 / 221

Advancing to step 7:
The number 221 fits into 1023 4 times, leaving a remainder of 139.
Write down 4 as next digit of the result. 
Result so far: 40964.0
The remainder is 139 after subtracting 884 from 1023.
Include the next digit (8) from the dividend after 139, then repeat: 1398 / 221

Moving on to step 8:
If we divide 1398 by 221, we get 6 and a remainder of 72.
Write down 6 as next digit of the result. 
Result so far: 409646.0
Subtract 1326 from 1398 to get 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Step 9:
When dividing 720 by 221, we get 3 with a remainder of 57.
Use 3 as the next digit of our solution. 
Result so far: 409646.3
Deduct 663 from 720 and we're left with 57.
Since there are no more digits in the dividend, we add a zero to the remainder making it 570, and continue the process.

Going ahead to step 10:
The number 221 fits into 570 2 times, leaving a remainder of 128.
Write down 2 as next digit of the result. 
Result so far: 409646.32
If we take 442 away from 570, we end up with 128.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1280, and continue the process.

Moving on to step 11:
221 can be fit into 1280 5 times, resulting in a remainder of 175.
Write down 5 as next digit of the result. 
Result so far: 409646.325
The remainder is 175 after subtracting 1105 from 1280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

Advancing to step 12:
1750 divided by 221 is 7 with a remainder of 203.
The number 7 becomes the next digit in our result. 
Result so far: 409646.3257
Deduct 1547 from 1750 and we're left with 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

On to step 13:
2030 divided by 221 is 9 with a remainder of 41.
Record the quotient 9 as the next digit in the result. 
Result so far: 409646.32579
Subtracting 1989 from 2030 leaves us with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Let's proceed to step 14:
221 can be fit into 410 1 times, resulting in a remainder of 189.
Use 1 as the next digit of our solution. 
Result so far: 409646.325791
Subtracting 221 from 410 leaves us with 189.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1890, and continue the process.

Going ahead to step 15:
If we divide 1890 by 221, we get 8 and a remainder of 122.
Write down 8 as next digit of the result. 
Result so far: 409646.3257918
If we subtract 1768 from 1890, we get 122.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1220, and continue the process.

Let's proceed to step 16:
When dividing 1220 by 221, we get 5 with a remainder of 115.
Put 5 as the next digit of the answer. 
Result so far: 409646.32579185
Subtract 1105 from 1220 to get 115.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1150, and continue the process.

After the division, we end up with 409646.32579185 and a remainder of 1.15e-07.