We divide 81511 by 64
The aim is to understand the frequency of 64 in 81511.

Moving on to step 1:
If we divide 8 by 64, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Grab the next digit (1) from the dividend, add it to 8, then carry on: 81 / 64

On to step 2:
The number 64 fits into 81 1 times, leaving a remainder of 17.
The next digit of our result is 1. 
Result so far: 1.0
Deduct 64 from 81 and we're left with 17.
Include the next digit (5) from the dividend after 17, then repeat: 175 / 64

Advancing to step 3:
64 goes into 175 2 times with a remainder of 47.
The next digit of our result is 2. 
Result so far: 12.0
Subtract 128 from 175 to get 47.
Include the next digit (1) from the dividend after 47, then repeat: 471 / 64

Advancing to step 4:
When dividing 471 by 64, we get 7 with a remainder of 23.
The number 7 becomes the next digit in our result. 
Result so far: 127.0
Subtracting 448 from 471 leaves us with 23.
Grab the next digit (1) from the dividend, add it to 23, then carry on: 231 / 64

On to step 5:
When dividing 231 by 64, we get 3 with a remainder of 39.
Record the quotient 3 as the next digit in the result. 
Result so far: 1273.0
Deduct 192 from 231 and we're left with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

Let's proceed to step 6:
64 goes into 390 6 times with a remainder of 6.
The next digit of our result is 6. 
Result so far: 1273.6
Subtract 384 from 390 to get 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 7:
60 divided by 64 is 0 with a remainder of 60.
The next digit of our result is 0. 
Result so far: 1273.6
Deduct 0 from 60 and we're left 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.

On to step 8:
The number 64 fits into 600 9 times, leaving a remainder of 24.
Record the quotient 9 as the next digit in the result. 
Result so far: 1273.609
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.

Let's proceed to step 9:
64 goes into 240 3 times with a remainder of 48.
Record the quotient 3 as the next digit in the result. 
Result so far: 1273.6093
Subtract 192 from 240 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Advancing to step 10:
480 divided by 64 is 7 with a remainder of 32.
Use 7 as the next digit of our solution. 
Result so far: 1273.60937
Subtracting 448 from 480 leaves us 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.

Step 11:
When dividing 320 by 64, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 1273.609375
If we take 320 away from 320, we end up 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.

On to step 12:
If we divide 0 by 64, we get 0 and a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 1273.609375
Subtract 0 from 0 to 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.

On to step 13:
64 goes into 0 0 times with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1273.609375
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.

Our division results in 1273.609375 with a remaining 0.0.