We divide 216551 by 45
The aim is to understand the frequency of 45 in 216551.

Moving on to step 1:
45 can be fit into 2 0 times, resulting in a remainder of 2.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Include the next digit (1) from the dividend after 2, then repeat: 21 / 45

On to step 2:
21 divided by 45 is 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Grab the next digit (6) from the dividend, add it to 21, then carry on: 216 / 45

On to step 3:
216 divided by 45 is 4 with a remainder of 36.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 180 from 216 and we're left with 36.
Fetch the next digit (5) from the dividend, attach it to 36 and continue: 365 / 45

Going ahead to step 4:
When dividing 365 by 45, we get 8 with a remainder of 5.
The number 8 becomes the next digit in our result. 
Result so far: 48.0
Deduct 360 from 365 and we're left with 5.
Bring next digit (5) of the dividend behind the 5 and repeat the process: 55 / 45

Advancing to step 5:
55 divided by 45 is 1 with a remainder of 10.
The number 1 becomes the next digit in our result. 
Result so far: 481.0
Deduct 45 from 55 and we're left with 10.
Bring next digit (1) of the dividend behind the 10 and repeat the process: 101 / 45

Step 6:
101 divided by 45 is 2 with a remainder of 11.
The next digit of our result is 2. 
Result so far: 4812.0
If we subtract 90 from 101, we 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.

Going ahead to step 7:
The number 45 fits into 110 2 times, leaving a remainder of 20.
Record the quotient 2 as the next digit in the result. 
Result so far: 4812.2
If we take 90 away from 110, we end up with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Step 8:
45 goes into 200 4 times with a remainder of 20.
Use 4 as the next digit of our solution. 
Result so far: 4812.24
Deduct 180 from 200 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

Advancing to step 9:
The number 45 fits into 200 4 times, leaving a remainder of 20.
Write down 4 as next digit of the result. 
Result so far: 4812.244
Subtracting 180 from 200 leaves us with 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 4812.244 and a remainder of 0.002.