Let's divide 91208604 by 623
The aim is to understand the frequency of 623 in 91208604.

Advancing to step 1:
If we divide 9 by 623, we get 0 and a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Include the next digit (1) from the dividend after 9, then repeat: 91 / 623

Going ahead to step 2:
The number 623 fits into 91 0 times, leaving a remainder of 91.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 91 to get 91.
Take the next digit (2) from the dividend and append it to 91, then repeat: 912 / 623

Step 3:
912 divided by 623 is 1 with a remainder of 289.
The next digit of our result is 1. 
Result so far: 1.0
Subtract 623 from 912 to get 289.
Take the next digit (0) from the dividend and append it to 289, then repeat: 2890 / 623

On to step 4:
2890 divided by 623 is 4 with a remainder of 398.
Use 4 as the next digit of our solution. 
Result so far: 14.0
Subtract 2492 from 2890 to get 398.
Append the next digit (8) from the dividend to 398 and continue with: 3988 / 623

Going ahead to step 5:
If we divide 3988 by 623, we get 6 and a remainder of 250.
Use 6 as the next digit of our solution. 
Result so far: 146.0
Subtract 3738 from 3988 to get 250.
Fetch the next digit (6) from the dividend, attach it to 250 and continue: 2506 / 623

On to step 6:
The number 623 fits into 2506 4 times, leaving a remainder of 14.
Record the quotient 4 as the next digit in the result. 
Result so far: 1464.0
Subtracting 2492 from 2506 leaves us with 14.
Bring next digit (0) of the dividend behind the 14 and repeat the process: 140 / 623

Moving on to step 7:
140 divided by 623 is 0 with a remainder of 140.
Use 0 as the next digit of our solution. 
Result so far: 14640.0
Subtracting 0 from 140 leaves us with 140.
Take the next digit (4) from the dividend and append it to 140, then repeat: 1404 / 623

Let's proceed to step 8:
The number 623 fits into 1404 2 times, leaving a remainder of 158.
Write down 2 as next digit of the result. 
Result so far: 146402.0
If we take 1246 away from 1404, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

On to step 9:
When dividing 1580 by 623, we get 2 with a remainder of 334.
Put 2 as the next digit of the answer. 
Result so far: 146402.2
Subtract 1246 from 1580 to get 334.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3340, and continue the process.

Advancing to step 10:
When dividing 3340 by 623, we get 5 with a remainder of 225.
Use 5 as the next digit of our solution. 
Result so far: 146402.25
Subtract 3115 from 3340 to get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

Going ahead to step 11:
If we divide 2250 by 623, we get 3 and a remainder of 381.
Use 3 as the next digit of our solution. 
Result so far: 146402.253
If we take 1869 away from 2250, we end up with 381.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3810, and continue the process.

On to step 12:
If we divide 3810 by 623, we get 6 and a remainder of 72.
Use 6 as the next digit of our solution. 
Result so far: 146402.2536
Deduct 3738 from 3810 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.

On to step 13:
623 goes into 720 1 times with a remainder of 97.
Write down 1 as next digit of the result. 
Result so far: 146402.25361
The remainder is 97 after subtracting 623 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 970, and continue the process.

Going ahead to step 14:
970 divided by 623 is 1 with a remainder of 347.
Record the quotient 1 as the next digit in the result. 
Result so far: 146402.253611
Subtracting 623 from 970 leaves us with 347.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3470, and continue the process.

Our division results in 146402.253611 with a remaining 3.47e-05.