Let's divide 19911564 by 325
The aim is to understand the frequency of 325 in 19911564.

Let's proceed to step 1:
If we divide 1 by 325, we get 0 and a remainder of 1.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Take the next digit (9) from the dividend and append it to 1, then repeat: 19 / 325

Let's proceed to step 2:
The number 325 fits into 19 0 times, leaving a remainder of 19.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 19, we get 19.
Take the next digit (9) from the dividend and append it to 19, then repeat: 199 / 325

Moving on to step 3:
If we divide 199 by 325, we get 0 and a remainder of 199.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 199 and we're left with 199.
Include the next digit (1) from the dividend after 199, then repeat: 1991 / 325

Moving on to step 4:
1991 divided by 325 is 6 with a remainder of 41.
Use 6 as the next digit of our solution. 
Result so far: 6.0
If we take 1950 away from 1991, we end up with 41.
Take the next digit (1) from the dividend and append it to 41, then repeat: 411 / 325

Step 5:
325 can be fit into 411 1 times, resulting in a remainder of 86.
Record the quotient 1 as the next digit in the result. 
Result so far: 61.0
If we take 325 away from 411, we end up with 86.
Bring next digit (5) of the dividend behind the 86 and repeat the process: 865 / 325

Let's proceed to step 6:
The number 325 fits into 865 2 times, leaving a remainder of 215.
The next digit of our result is 2. 
Result so far: 612.0
The remainder is 215 after subtracting 650 from 865.
Take the next digit (6) from the dividend and append it to 215, then repeat: 2156 / 325

On to step 7:
325 can be fit into 2156 6 times, resulting in a remainder of 206.
Write down 6 as next digit of the result. 
Result so far: 6126.0
Deduct 1950 from 2156 and we're left with 206.
Fetch the next digit (4) from the dividend, attach it to 206 and continue: 2064 / 325

Let's proceed to step 8:
325 can be fit into 2064 6 times, resulting in a remainder of 114.
The next digit of our result is 6. 
Result so far: 61266.0
If we take 1950 away from 2064, we end up with 114.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1140, and continue the process.

Moving on to step 9:
1140 divided by 325 is 3 with a remainder of 165.
Put 3 as the next digit of the answer. 
Result so far: 61266.3
If we subtract 975 from 1140, we get 165.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1650, and continue the process.

Moving on to step 10:
325 goes into 1650 5 times with a remainder of 25.
The next digit of our result is 5. 
Result so far: 61266.35
Deduct 1625 from 1650 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.

Advancing to step 11:
If we divide 250 by 325, we get 0 and a remainder of 250.
Write down 0 as next digit of the result. 
Result so far: 61266.35
Deduct 0 from 250 and we're left with 250.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2500, and continue the process.

Step 12:
If we divide 2500 by 325, we get 7 and a remainder of 225.
Use 7 as the next digit of our solution. 
Result so far: 61266.3507
Subtract 2275 from 2500 to get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Moving on to step 13:
2250 divided by 325 is 6 with a remainder of 300.
Record the quotient 6 as the next digit in the result. 
Result so far: 61266.35076
Subtracting 1950 from 2250 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Moving on to step 14:
325 can be fit into 3000 9 times, resulting in a remainder of 75.
Write down 9 as next digit of the result. 
Result so far: 61266.350769
Subtracting 2925 from 3000 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Going ahead to step 15:
If we divide 750 by 325, we get 2 and a remainder of 100.
Put 2 as the next digit of the answer. 
Result so far: 61266.3507692
Subtracting 650 from 750 leaves us with 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Advancing to step 16:
When dividing 1000 by 325, we get 3 with a remainder of 25.
Use 3 as the next digit of our solution. 
Result so far: 61266.35076923
The remainder is 25 after subtracting 975 from 1000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 250, and continue the process.

The quotient of the division is 61266.35076923, and the remainder is 2.5e-08.