We look at the division of 73963437 by 789 
The aim is to understand the frequency of 789 in 73963437.

Advancing to step 1:
7 divided by 789 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Grab the next digit (3) from the dividend, add it to 7, then carry on: 73 / 789

Let's proceed to step 2:
If we divide 73 by 789, we get 0 and a remainder of 73.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 73, we end up with 73.
Take the next digit (9) from the dividend and append it to 73, then repeat: 739 / 789

Going ahead to step 3:
789 can be fit into 739 0 times, resulting in a remainder of 739.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 739 and we're left with 739.
Grab the next digit (6) from the dividend, add it to 739, then carry on: 7396 / 789

Advancing to step 4:
789 goes into 7396 9 times with a remainder of 295.
The next digit of our result is 9. 
Result so far: 9.0
The remainder is 295 after subtracting 7101 from 7396.
Fetch the next digit (3) from the dividend, attach it to 295 and continue: 2953 / 789

Going ahead to step 5:
2953 divided by 789 is 3 with a remainder of 586.
Record the quotient 3 as the next digit in the result. 
Result so far: 93.0
If we subtract 2367 from 2953, we get 586.
Append the next digit (4) from the dividend to 586 and continue with: 5864 / 789

Advancing to step 6:
789 can be fit into 5864 7 times, resulting in a remainder of 341.
The next digit of our result is 7. 
Result so far: 937.0
Deduct 5523 from 5864 and we're left with 341.
Take the next digit (3) from the dividend and append it to 341, then repeat: 3413 / 789

Advancing to step 7:
The number 789 fits into 3413 4 times, leaving a remainder of 257.
The next digit of our result is 4. 
Result so far: 9374.0
If we take 3156 away from 3413, we end up with 257.
Include the next digit (7) from the dividend after 257, then repeat: 2577 / 789

Step 8:
789 can be fit into 2577 3 times, resulting in a remainder of 210.
Record the quotient 3 as the next digit in the result. 
Result so far: 93743.0
Deduct 2367 from 2577 and we're left with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Let's proceed to step 9:
The number 789 fits into 2100 2 times, leaving a remainder of 522.
The next digit of our result is 2. 
Result so far: 93743.2
Subtracting 1578 from 2100 leaves us with 522.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5220, and continue the process.

On to step 10:
5220 divided by 789 is 6 with a remainder of 486.
The number 6 becomes the next digit in our result. 
Result so far: 93743.26
Subtracting 4734 from 5220 leaves us with 486.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4860, and continue the process.

On to step 11:
789 can be fit into 4860 6 times, resulting in a remainder of 126.
Write down 6 as next digit of the result. 
Result so far: 93743.266
Subtracting 4734 from 4860 leaves us with 126.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1260, and continue the process.

The final outcome is 93743.266, with a leftover of 0.0126.