99666161 ÷ 22 
Our goal is to divide 99666161 by 22.

On to step 1:
9 divided by 22 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Append the next digit (9) from the dividend to 9 and continue with: 99 / 22

Step 2:
99 divided by 22 is 4 with a remainder of 11.
Record the quotient 4 as the next digit in the result. 
Result so far: 4.0
Subtract 88 from 99 to get 11.
Include the next digit (6) from the dividend after 11, then repeat: 116 / 22

Advancing to step 3:
The number 22 fits into 116 5 times, leaving a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 45.0
Deduct 110 from 116 and we're left with 6.
Grab the next digit (6) from the dividend, add it to 6, then carry on: 66 / 22

Advancing to step 4:
22 goes into 66 3 times with a remainder of 0.
The number 3 becomes the next digit in our result. 
Result so far: 453.0
If we take 66 away from 66, we end up with 0.
Fetch the next digit (6) from the dividend, attach it to 0 and continue: 6 / 22

Advancing to step 5:
6 divided by 22 is 0 with a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 4530.0
If we take 0 away from 6, we end up with 6.
Bring next digit (1) of the dividend behind the 6 and repeat the process: 61 / 22

Step 6:
61 divided by 22 is 2 with a remainder of 17.
Use 2 as the next digit of our solution. 
Result so far: 45302.0
Deduct 44 from 61 and we're left with 17.
Take the next digit (6) from the dividend and append it to 17, then repeat: 176 / 22

Moving on to step 7:
If we divide 176 by 22, we get 8 and a remainder of 0.
Use 8 as the next digit of our solution. 
Result so far: 453028.0
Subtracting 176 from 176 leaves us with 0.
Fetch the next digit (1) from the dividend, attach it to 0 and continue: 1 / 22

Step 8:
22 goes into 1 0 times with a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 4530280.0
If we subtract 0 from 1, we get 1.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Advancing to step 9:
22 goes into 10 0 times with a remainder of 10.
Write down 0 as next digit of the result. 
Result so far: 4530280.0
If we take 0 away from 10, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 10:
22 goes into 100 4 times with a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 4530280.04
The remainder is 12 after subtracting 88 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 11:
22 goes into 120 5 times with a remainder of 10.
The next digit of our result is 5. 
Result so far: 4530280.045
If we take 110 away from 120, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 12:
When dividing 100 by 22, we get 4 with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 4530280.0454
Subtracting 88 from 100 leaves us with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Step 13:
The number 22 fits into 120 5 times, leaving a remainder of 10.
The number 5 becomes the next digit in our result. 
Result so far: 4530280.04545
The remainder is 10 after subtracting 110 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 14:
When dividing 100 by 22, we get 4 with a remainder of 12.
Write down 4 as next digit of the result. 
Result so far: 4530280.045454
The remainder is 12 after subtracting 88 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

On to step 15:
22 can be fit into 120 5 times, resulting in a remainder of 10.
Put 5 as the next digit of the answer. 
Result so far: 4530280.0454545
Deduct 110 from 120 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 16:
22 can be fit into 100 4 times, resulting in a remainder of 12.
Use 4 as the next digit of our solution. 
Result so far: 4530280.04545454
The remainder is 12 after subtracting 88 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

After the division, we end up with 4530280.04545454 and a remainder of 1.2e-08.