6444817 ÷ 123 
The aim is to understand the frequency of 123 in 6444817.

On to step 1:
123 goes into 6 0 times with a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Bring next digit (4) of the dividend behind the 6 and repeat the process: 64 / 123

On to step 2:
The number 123 fits into 64 0 times, leaving a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 64 and we're left with 64.
Append the next digit (4) from the dividend to 64 and continue with: 644 / 123

On to step 3:
123 can be fit into 644 5 times, resulting in a remainder of 29.
Write down 5 as next digit of the result. 
Result so far: 5.0
Deduct 615 from 644 and we're left with 29.
Include the next digit (4) from the dividend after 29, then repeat: 294 / 123

Moving on to step 4:
If we divide 294 by 123, we get 2 and a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 52.0
The remainder is 48 after subtracting 246 from 294.
Include the next digit (8) from the dividend after 48, then repeat: 488 / 123

Moving on to step 5:
When dividing 488 by 123, we get 3 with a remainder of 119.
Put 3 as the next digit of the answer. 
Result so far: 523.0
Deduct 369 from 488 and we're left with 119.
Grab the next digit (1) from the dividend, add it to 119, then carry on: 1191 / 123

Advancing to step 6:
1191 divided by 123 is 9 with a remainder of 84.
Write down 9 as next digit of the result. 
Result so far: 5239.0
If we subtract 1107 from 1191, we get 84.
Include the next digit (7) from the dividend after 84, then repeat: 847 / 123

Let's proceed to step 7:
123 can be fit into 847 6 times, resulting in a remainder of 109.
Put 6 as the next digit of the answer. 
Result so far: 52396.0
The remainder is 109 after subtracting 738 from 847.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1090, and continue the process.

Let's proceed to step 8:
The number 123 fits into 1090 8 times, leaving a remainder of 106.
Use 8 as the next digit of our solution. 
Result so far: 52396.8
If we take 984 away from 1090, we end up with 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Step 9:
1060 divided by 123 is 8 with a remainder of 76.
Record the quotient 8 as the next digit in the result. 
Result so far: 52396.88
Deduct 984 from 1060 and we're left with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

The final outcome is 52396.88, with a leftover of 0.076.