We look at the division of 623372 by 89 
The aim is to understand the frequency of 89 in 623372.

On to step 1:
89 goes into 6 0 times with a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (2) from the dividend, attach it to 6 and continue: 62 / 89

On to step 2:
If we divide 62 by 89, we get 0 and a remainder of 62.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 62 to get 62.
Bring next digit (3) of the dividend behind the 62 and repeat the process: 623 / 89

Advancing to step 3:
623 divided by 89 is 7 with a remainder of 0.
Use 7 as the next digit of our solution. 
Result so far: 7.0
Deduct 623 from 623 and we're left with 0.
Include the next digit (3) from the dividend after 0, then repeat: 3 / 89

Moving on to step 4:
The number 89 fits into 3 0 times, leaving a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 70.0
Subtracting 0 from 3 leaves us with 3.
Include the next digit (7) from the dividend after 3, then repeat: 37 / 89

Advancing to step 5:
When dividing 37 by 89, we get 0 with a remainder of 37.
Use 0 as the next digit of our solution. 
Result so far: 700.0
Deduct 0 from 37 and we're left with 37.
Grab the next digit (2) from the dividend, add it to 37, then carry on: 372 / 89

Moving on to step 6:
If we divide 372 by 89, we get 4 and a remainder of 16.
Record the quotient 4 as the next digit in the result. 
Result so far: 7004.0
The remainder is 16 after subtracting 356 from 372.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
89 can be fit into 160 1 times, resulting in a remainder of 71.
Record the quotient 1 as the next digit in the result. 
Result so far: 7004.1
If we take 89 away from 160, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Moving on to step 8:
89 can be fit into 710 7 times, resulting in a remainder of 87.
The number 7 becomes the next digit in our result. 
Result so far: 7004.17
If we subtract 623 from 710, we get 87.
Since there are no more digits in the dividend, we add a zero to the remainder making it 870, and continue the process.

Advancing to step 9:
89 goes into 870 9 times with a remainder of 69.
Write down 9 as next digit of the result. 
Result so far: 7004.179
Subtracting 801 from 870 leaves us with 69.
Since there are no more digits in the dividend, we add a zero to the remainder making it 690, and continue the process.

Let's proceed to step 10:
When dividing 690 by 89, we get 7 with a remainder of 67.
Put 7 as the next digit of the answer. 
Result so far: 7004.1797
Deduct 623 from 690 and we're left with 67.
Since there are no more digits in the dividend, we add a zero to the remainder making it 670, and continue the process.

Let's proceed to step 11:
89 can be fit into 670 7 times, resulting in a remainder of 47.
The next digit of our result is 7. 
Result so far: 7004.17977
The remainder is 47 after subtracting 623 from 670.
Since there are no more digits in the dividend, we add a zero to the remainder making it 470, and continue the process.

The final outcome is 7004.17977, with a leftover of 4.7e-05.