We look at the division of 669724 by 73 
The aim is to understand the frequency of 73 in 669724.

Step 1:
73 can be fit into 6 0 times, resulting in a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 73

Moving on to step 2:
The number 73 fits into 66 0 times, leaving a remainder of 66.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 66 leaves us with 66.
Grab the next digit (9) from the dividend, add it to 66, then carry on: 669 / 73

Moving on to step 3:
73 goes into 669 9 times with a remainder of 12.
The number 9 becomes the next digit in our result. 
Result so far: 9.0
Deduct 657 from 669 and we're left with 12.
Take the next digit (7) from the dividend and append it to 12, then repeat: 127 / 73

On to step 4:
The number 73 fits into 127 1 times, leaving a remainder of 54.
The number 1 becomes the next digit in our result. 
Result so far: 91.0
The remainder is 54 after subtracting 73 from 127.
Append the next digit (2) from the dividend to 54 and continue with: 542 / 73

Step 5:
The number 73 fits into 542 7 times, leaving a remainder of 31.
The next digit of our result is 7. 
Result so far: 917.0
If we subtract 511 from 542, we get 31.
Fetch the next digit (4) from the dividend, attach it to 31 and continue: 314 / 73

Let's proceed to step 6:
314 divided by 73 is 4 with a remainder of 22.
The next digit of our result is 4. 
Result so far: 9174.0
If we take 292 away from 314, we end up with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 7:
73 goes into 220 3 times with a remainder of 1.
The next digit of our result is 3. 
Result so far: 9174.3
The remainder is 1 after subtracting 219 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 10, and continue the process.

Let's proceed to step 8:
If we divide 10 by 73, we get 0 and a remainder of 10.
Record the quotient 0 as the next digit in the result. 
Result so far: 9174.3
If we subtract 0 from 10, we get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Advancing to step 9:
73 goes into 100 1 times with a remainder of 27.
The number 1 becomes the next digit in our result. 
Result so far: 9174.301
The remainder is 27 after subtracting 73 from 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 10:
73 goes into 270 3 times with a remainder of 51.
The number 3 becomes the next digit in our result. 
Result so far: 9174.3013
If we subtract 219 from 270, we get 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 11:
When dividing 510 by 73, we get 6 with a remainder of 72.
Use 6 as the next digit of our solution. 
Result so far: 9174.30136
Deduct 438 from 510 and we're left with 72.
Since there are no more digits in the dividend, we add a zero to the remainder making it 720, and continue the process.

Advancing to step 12:
73 can be fit into 720 9 times, resulting in a remainder of 63.
The next digit of our result is 9. 
Result so far: 9174.301369
If we take 657 away from 720, we end up with 63.
Since there are no more digits in the dividend, we add a zero to the remainder making it 630, and continue the process.

Let's proceed to step 13:
630 divided by 73 is 8 with a remainder of 46.
The number 8 becomes the next digit in our result. 
Result so far: 9174.3013698
Deduct 584 from 630 and we're left with 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 14:
The number 73 fits into 460 6 times, leaving a remainder of 22.
Write down 6 as next digit of the result. 
Result so far: 9174.30136986
The remainder is 22 after subtracting 438 from 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final result is 9174.30136986 with a remainder of 2.2e-08.