We look at the division of 99131518 by 221 
Our goal is to divide 99131518 by 221.

Moving on to step 1:
221 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.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 221

On to step 2:
If we divide 99 by 221, we get 0 and a remainder of 99.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 99, we end up with 99.
Bring next digit (1) of the dividend behind the 99 and repeat the process: 991 / 221

Moving on to step 3:
If we divide 991 by 221, we get 4 and a remainder of 107.
Use 4 as the next digit of our solution. 
Result so far: 4.0
If we subtract 884 from 991, we get 107.
Append the next digit (3) from the dividend to 107 and continue with: 1073 / 221

Let's proceed to step 4:
1073 divided by 221 is 4 with a remainder of 189.
The number 4 becomes the next digit in our result. 
Result so far: 44.0
Deduct 884 from 1073 and we're left with 189.
Include the next digit (1) from the dividend after 189, then repeat: 1891 / 221

Step 5:
When dividing 1891 by 221, we get 8 with a remainder of 123.
Use 8 as the next digit of our solution. 
Result so far: 448.0
If we take 1768 away from 1891, we end up with 123.
Grab the next digit (5) from the dividend, add it to 123, then carry on: 1235 / 221

Advancing to step 6:
221 goes into 1235 5 times with a remainder of 130.
The number 5 becomes the next digit in our result. 
Result so far: 4485.0
Deduct 1105 from 1235 and we're left with 130.
Bring next digit (1) of the dividend behind the 130 and repeat the process: 1301 / 221

On to step 7:
221 can be fit into 1301 5 times, resulting in a remainder of 196.
The next digit of our result is 5. 
Result so far: 44855.0
If we subtract 1105 from 1301, we get 196.
Grab the next digit (8) from the dividend, add it to 196, then carry on: 1968 / 221

Step 8:
If we divide 1968 by 221, we get 8 and a remainder of 200.
Record the quotient 8 as the next digit in the result. 
Result so far: 448558.0
If we subtract 1768 from 1968, we 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.

On to step 9:
221 goes into 2000 9 times with a remainder of 11.
Record the quotient 9 as the next digit in the result. 
Result so far: 448558.9
Subtract 1989 from 2000 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 10:
110 divided by 221 is 0 with a remainder of 110.
Put 0 as the next digit of the answer. 
Result so far: 448558.9
The remainder is 110 after subtracting 0 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1100, and continue the process.

Step 11:
When dividing 1100 by 221, we get 4 with a remainder of 216.
Write down 4 as next digit of the result. 
Result so far: 448558.904
Deduct 884 from 1100 and we're left with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Moving on to step 12:
The number 221 fits into 2160 9 times, leaving a remainder of 171.
The next digit of our result is 9. 
Result so far: 448558.9049
If we subtract 1989 from 2160, we get 171.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1710, and continue the process.

Step 13:
221 can be fit into 1710 7 times, resulting in a remainder of 163.
The number 7 becomes the next digit in our result. 
Result so far: 448558.90497
The remainder is 163 after subtracting 1547 from 1710.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1630, and continue the process.

Let's proceed to step 14:
When dividing 1630 by 221, we get 7 with a remainder of 83.
Use 7 as the next digit of our solution. 
Result so far: 448558.904977
If we subtract 1547 from 1630, we get 83.
Since there are no more digits in the dividend, we add a zero to the remainder making it 830, and continue the process.

The quotient of the division is 448558.904977, and the remainder is 8.3e-06.