We look at the division of 405191 by 64 
The aim is to understand the frequency of 64 in 405191.

Going ahead to step 1:
When dividing 4 by 64, we get 0 with a remainder of 4.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Fetch the next digit (0) from the dividend, attach it to 4 and continue: 40 / 64

Let's proceed to step 2:
64 can be fit into 40 0 times, resulting in a remainder of 40.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 40, we end up with 40.
Include the next digit (5) from the dividend after 40, then repeat: 405 / 64

Advancing to step 3:
405 divided by 64 is 6 with a remainder of 21.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 384 from 405 leaves us with 21.
Take the next digit (1) from the dividend and append it to 21, then repeat: 211 / 64

Step 4:
64 goes into 211 3 times with a remainder of 19.
The next digit of our result is 3. 
Result so far: 63.0
If we subtract 192 from 211, we get 19.
Include the next digit (9) from the dividend after 19, then repeat: 199 / 64

Advancing to step 5:
64 can be fit into 199 3 times, resulting in a remainder of 7.
Record the quotient 3 as the next digit in the result. 
Result so far: 633.0
Subtracting 192 from 199 leaves us with 7.
Fetch the next digit (1) from the dividend, attach it to 7 and continue: 71 / 64

Going ahead to step 6:
When dividing 71 by 64, we get 1 with a remainder of 7.
The next digit of our result is 1. 
Result so far: 6331.0
The remainder is 7 after subtracting 64 from 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

On to step 7:
64 goes into 70 1 times with a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 6331.1
If we take 64 away from 70, we end up with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 8:
If we divide 60 by 64, we get 0 and a remainder of 60.
The next digit of our result is 0. 
Result so far: 6331.1
If we take 0 away from 60, we end up with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Going ahead to step 9:
64 goes into 600 9 times with a remainder of 24.
Record the quotient 9 as the next digit in the result. 
Result so far: 6331.109
Subtract 576 from 600 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 10:
The number 64 fits into 240 3 times, leaving a remainder of 48.
Write down 3 as next digit of the result. 
Result so far: 6331.1093
The remainder is 48 after subtracting 192 from 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 11:
When dividing 480 by 64, we get 7 with a remainder of 32.
Use 7 as the next digit of our solution. 
Result so far: 6331.10937
If we take 448 away from 480, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Let's proceed to step 12:
64 goes into 320 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 6331.109375
If we subtract 320 from 320, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 13:
0 divided by 64 is 0 with a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 6331.109375
The remainder is 0 after subtracting 0 from 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 14:
0 divided by 64 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 6331.109375
Subtracting 0 from 0 leaves us with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

After the division, we end up with 6331.109375 and a remainder of 0.0.