We look at the division of 644571 by 67 
The aim is to understand the frequency of 67 in 644571.

Going ahead to step 1:
The number 67 fits into 6 0 times, leaving a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 67

On to step 2:
When dividing 64 by 67, we get 0 with a remainder of 64.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 64 to get 64.
Fetch the next digit (4) from the dividend, attach it to 64 and continue: 644 / 67

Moving on to step 3:
67 can be fit into 644 9 times, resulting in a remainder of 41.
Write down 9 as next digit of the result. 
Result so far: 9.0
Subtracting 603 from 644 leaves us with 41.
Bring next digit (5) of the dividend behind the 41 and repeat the process: 415 / 67

Moving on to step 4:
If we divide 415 by 67, we get 6 and a remainder of 13.
The number 6 becomes the next digit in our result. 
Result so far: 96.0
If we take 402 away from 415, we end up with 13.
Bring next digit (7) of the dividend behind the 13 and repeat the process: 137 / 67

On to step 5:
If we divide 137 by 67, we get 2 and a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 962.0
If we subtract 134 from 137, we get 3.
Bring next digit (1) of the dividend behind the 3 and repeat the process: 31 / 67

Let's proceed to step 6:
67 goes into 31 0 times with a remainder of 31.
Use 0 as the next digit of our solution. 
Result so far: 9620.0
If we take 0 away from 31, we end up with 31.
Since there are no more digits in the dividend, we add a zero to the remainder making it 310, and continue the process.

On to step 7:
The number 67 fits into 310 4 times, leaving a remainder of 42.
Use 4 as the next digit of our solution. 
Result so far: 9620.4
Subtract 268 from 310 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 8:
67 can be fit into 420 6 times, resulting in a remainder of 18.
Record the quotient 6 as the next digit in the result. 
Result so far: 9620.46
Subtracting 402 from 420 leaves us with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 9:
67 goes into 180 2 times with a remainder of 46.
Use 2 as the next digit of our solution. 
Result so far: 9620.462
If we subtract 134 from 180, we get 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Advancing to step 10:
The number 67 fits into 460 6 times, leaving a remainder of 58.
Put 6 as the next digit of the answer. 
Result so far: 9620.4626
The remainder is 58 after subtracting 402 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 11:
67 can be fit into 580 8 times, resulting in a remainder of 44.
The next digit of our result is 8. 
Result so far: 9620.46268
The remainder is 44 after subtracting 536 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 440, and continue the process.

On to step 12:
When dividing 440 by 67, we get 6 with a remainder of 38.
Use 6 as the next digit of our solution. 
Result so far: 9620.462686
Deduct 402 from 440 and we're left with 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 13:
The number 67 fits into 380 5 times, leaving a remainder of 45.
Record the quotient 5 as the next digit in the result. 
Result so far: 9620.4626865
The remainder is 45 after subtracting 335 from 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 450, and continue the process.

Advancing to step 14:
67 can be fit into 450 6 times, resulting in a remainder of 48.
The number 6 becomes the next digit in our result. 
Result so far: 9620.46268656
Subtracting 402 from 450 leaves us with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

The quotient of the division is 9620.46268656, and the remainder is 4.8e-08.