We divide 221564 by 90
We want to figure out the number of times 221564 can be divided by 90.

On to step 1:
When dividing 2 by 90, we get 0 with a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Append the next digit (2) from the dividend to 2 and continue with: 22 / 90

Moving on to step 2:
The number 90 fits into 22 0 times, leaving a remainder of 22.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 22, we get 22.
Bring next digit (1) of the dividend behind the 22 and repeat the process: 221 / 90

Let's proceed to step 3:
90 goes into 221 2 times with a remainder of 41.
The next digit of our result is 2. 
Result so far: 2.0
Deduct 180 from 221 and we're left with 41.
Bring next digit (5) of the dividend behind the 41 and repeat the process: 415 / 90

Going ahead to step 4:
When dividing 415 by 90, we get 4 with a remainder of 55.
Use 4 as the next digit of our solution. 
Result so far: 24.0
If we take 360 away from 415, we end up with 55.
Append the next digit (6) from the dividend to 55 and continue with: 556 / 90

Advancing to step 5:
90 goes into 556 6 times with a remainder of 16.
Write down 6 as next digit of the result. 
Result so far: 246.0
Deduct 540 from 556 and we're left with 16.
Include the next digit (4) from the dividend after 16, then repeat: 164 / 90

Let's proceed to step 6:
The number 90 fits into 164 1 times, leaving a remainder of 74.
Use 1 as the next digit of our solution. 
Result so far: 2461.0
If we take 90 away from 164, we end up with 74.
Since there are no more digits in the dividend, we add a zero to the remainder making it 740, and continue the process.

Advancing to step 7:
740 divided by 90 is 8 with a remainder of 20.
Use 8 as the next digit of our solution. 
Result so far: 2461.8
Subtract 720 from 740 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 8:
90 can be fit into 200 2 times, resulting in a remainder of 20.
The next digit of our result is 2. 
Result so far: 2461.82
The remainder is 20 after subtracting 180 from 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 9:
90 goes into 200 2 times with a remainder of 20.
Write down 2 as next digit of the result. 
Result so far: 2461.822
Subtract 180 from 200 to get 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

After the division, we end up with 2461.822 and a remainder of 0.002.