We divide 261221 by 45
The aim is to understand the frequency of 45 in 261221.

On to step 1:
2 divided by 45 is 0 with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 2 and we're left with 2.
Grab the next digit (6) from the dividend, add it to 2, then carry on: 26 / 45

Let's proceed to step 2:
When dividing 26 by 45, we get 0 with a remainder of 26.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 26 and we're left with 26.
Include the next digit (1) from the dividend after 26, then repeat: 261 / 45

Going ahead to step 3:
261 divided by 45 is 5 with a remainder of 36.
The number 5 becomes the next digit in our result. 
Result so far: 5.0
If we take 225 away from 261, we end up with 36.
Take the next digit (2) from the dividend and append it to 36, then repeat: 362 / 45

Going ahead to step 4:
If we divide 362 by 45, we get 8 and a remainder of 2.
Use 8 as the next digit of our solution. 
Result so far: 58.0
If we take 360 away from 362, we end up with 2.
Take the next digit (2) from the dividend and append it to 2, then repeat: 22 / 45

Advancing to step 5:
When dividing 22 by 45, we get 0 with a remainder of 22.
The number 0 becomes the next digit in our result. 
Result so far: 580.0
Subtract 0 from 22 to get 22.
Fetch the next digit (1) from the dividend, attach it to 22 and continue: 221 / 45

Moving on to step 6:
45 goes into 221 4 times with a remainder of 41.
Put 4 as the next digit of the answer. 
Result so far: 5804.0
Deduct 180 from 221 and we're left with 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

Going ahead to step 7:
When dividing 410 by 45, we get 9 with a remainder of 5.
Record the quotient 9 as the next digit in the result. 
Result so far: 5804.9
If we take 405 away from 410, we end up 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.

Let's proceed to step 8:
The number 45 fits into 50 1 times, leaving a remainder of 5.
The next digit of our result is 1. 
Result so far: 5804.91
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Going ahead to step 9:
When dividing 50 by 45, we get 1 with a remainder of 5.
The next digit of our result is 1. 
Result so far: 5804.911
Subtract 45 from 50 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Our division results in 5804.911 with a remaining 0.0005.