Let's divide 931921 by 45
The aim is to understand the frequency of 45 in 931921.

Step 1:
9 divided by 45 is 0 with a remainder of 9.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Grab the next digit (3) from the dividend, add it to 9, then carry on: 93 / 45

Let's proceed to step 2:
45 goes into 93 2 times with a remainder of 3.
Put 2 as the next digit of the answer. 
Result so far: 2.0
If we take 90 away from 93, we end up with 3.
Fetch the next digit (1) from the dividend, attach it to 3 and continue: 31 / 45

Going ahead to step 3:
45 can be fit into 31 0 times, resulting in a remainder of 31.
Use 0 as the next digit of our solution. 
Result so far: 20.0
Deduct 0 from 31 and we're left with 31.
Grab the next digit (9) from the dividend, add it to 31, then carry on: 319 / 45

Moving on to step 4:
45 goes into 319 7 times with a remainder of 4.
Put 7 as the next digit of the answer. 
Result so far: 207.0
If we subtract 315 from 319, we get 4.
Include the next digit (2) from the dividend after 4, then repeat: 42 / 45

Let's proceed to step 5:
45 goes into 42 0 times with a remainder of 42.
Put 0 as the next digit of the answer. 
Result so far: 2070.0
Subtracting 0 from 42 leaves us with 42.
Take the next digit (1) from the dividend and append it to 42, then repeat: 421 / 45

Advancing to step 6:
45 can be fit into 421 9 times, resulting in a remainder of 16.
Write down 9 as next digit of the result. 
Result so far: 20709.0
Subtracting 405 from 421 leaves us with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Going ahead to step 7:
45 can be fit into 160 3 times, resulting in a remainder of 25.
The number 3 becomes the next digit in our result. 
Result so far: 20709.3
Deduct 135 from 160 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Let's proceed to step 8:
45 goes into 250 5 times with a remainder of 25.
Put 5 as the next digit of the answer. 
Result so far: 20709.35
Deduct 225 from 250 and we're left with 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

Going ahead to step 9:
250 divided by 45 is 5 with a remainder of 25.
Write down 5 as next digit of the result. 
Result so far: 20709.355
If we subtract 225 from 250, we get 25.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

After the division, we end up with 20709.355 and a remainder of 0.0025.