We divide 221612 by 45
We want to figure out the number of times 221612 can be divided by 45.

Going ahead to step 1:
The number 45 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 45

Advancing to step 2:
22 divided by 45 is 0 with a remainder of 22.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 22, we end up with 22.
Grab the next digit (1) from the dividend, add it to 22, then carry on: 221 / 45

Going ahead to step 3:
45 can be fit into 221 4 times, resulting in a remainder of 41.
Put 4 as the next digit of the answer. 
Result so far: 4.0
The remainder is 41 after subtracting 180 from 221.
Include the next digit (6) from the dividend after 41, then repeat: 416 / 45

Going ahead to step 4:
45 goes into 416 9 times with a remainder of 11.
The number 9 becomes the next digit in our result. 
Result so far: 49.0
Subtract 405 from 416 to get 11.
Include the next digit (1) from the dividend after 11, then repeat: 111 / 45

Going ahead to step 5:
45 goes into 111 2 times with a remainder of 21.
The number 2 becomes the next digit in our result. 
Result so far: 492.0
The remainder is 21 after subtracting 90 from 111.
Grab the next digit (2) from the dividend, add it to 21, then carry on: 212 / 45

Let's proceed to step 6:
45 can be fit into 212 4 times, resulting in a remainder of 32.
The number 4 becomes the next digit in our result. 
Result so far: 4924.0
If we subtract 180 from 212, we get 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Step 7:
When dividing 320 by 45, we get 7 with a remainder of 5.
Write down 7 as next digit of the result. 
Result so far: 4924.7
Deduct 315 from 320 and we're left with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 8:
When dividing 50 by 45, we get 1 with a remainder of 5.
The number 1 becomes the next digit in our result. 
Result so far: 4924.71
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 9:
If we divide 50 by 45, we get 1 and a remainder of 5.
The next digit of our result is 1. 
Result so far: 4924.711
Subtracting 45 from 50 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

After the division, we end up with 4924.711 and a remainder of 0.0005.