We look at the division of 96421579 by 653 
The aim is to understand the frequency of 653 in 96421579.

Step 1:
If we divide 9 by 653, we get 0 and a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 9 leaves us with 9.
Bring next digit (6) of the dividend behind the 9 and repeat the process: 96 / 653

Let's proceed to step 2:
When dividing 96 by 653, we get 0 with a remainder of 96.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 96, we get 96.
Bring next digit (4) of the dividend behind the 96 and repeat the process: 964 / 653

Going ahead to step 3:
The number 653 fits into 964 1 times, leaving a remainder of 311.
Put 1 as the next digit of the answer. 
Result so far: 1.0
The remainder is 311 after subtracting 653 from 964.
Bring next digit (2) of the dividend behind the 311 and repeat the process: 3112 / 653

Step 4:
653 goes into 3112 4 times with a remainder of 500.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
The remainder is 500 after subtracting 2612 from 3112.
Append the next digit (1) from the dividend to 500 and continue with: 5001 / 653

Let's proceed to step 5:
If we divide 5001 by 653, we get 7 and a remainder of 430.
The next digit of our result is 7. 
Result so far: 147.0
If we subtract 4571 from 5001, we get 430.
Fetch the next digit (5) from the dividend, attach it to 430 and continue: 4305 / 653

Advancing to step 6:
The number 653 fits into 4305 6 times, leaving a remainder of 387.
Use 6 as the next digit of our solution. 
Result so far: 1476.0
The remainder is 387 after subtracting 3918 from 4305.
Include the next digit (7) from the dividend after 387, then repeat: 3877 / 653

Moving on to step 7:
If we divide 3877 by 653, we get 5 and a remainder of 612.
The number 5 becomes the next digit in our result. 
Result so far: 14765.0
The remainder is 612 after subtracting 3265 from 3877.
Append the next digit (9) from the dividend to 612 and continue with: 6129 / 653

Advancing to step 8:
If we divide 6129 by 653, we get 9 and a remainder of 252.
The next digit of our result is 9. 
Result so far: 147659.0
If we take 5877 away from 6129, we end up with 252.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Step 9:
The number 653 fits into 2520 3 times, leaving a remainder of 561.
The next digit of our result is 3. 
Result so far: 147659.3
Subtract 1959 from 2520 to get 561.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5610, and continue the process.

Going ahead to step 10:
If we divide 5610 by 653, we get 8 and a remainder of 386.
The number 8 becomes the next digit in our result. 
Result so far: 147659.38
Subtract 5224 from 5610 to get 386.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3860, and continue the process.

On to step 11:
3860 divided by 653 is 5 with a remainder of 595.
The number 5 becomes the next digit in our result. 
Result so far: 147659.385
Subtract 3265 from 3860 to get 595.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5950, and continue the process.

Let's proceed to step 12:
653 goes into 5950 9 times with a remainder of 73.
Write down 9 as next digit of the result. 
Result so far: 147659.3859
Deduct 5877 from 5950 and we're left with 73.
Since there are no more digits in the dividend, we add a zero to the remainder making it 730, and continue the process.

Moving on to step 13:
730 divided by 653 is 1 with a remainder of 77.
Put 1 as the next digit of the answer. 
Result so far: 147659.38591
Subtracting 653 from 730 leaves us with 77.
Since there are no more digits in the dividend, we add a zero to the remainder making it 770, and continue the process.

Let's proceed to step 14:
If we divide 770 by 653, we get 1 and a remainder of 117.
Record the quotient 1 as the next digit in the result. 
Result so far: 147659.385911
If we subtract 653 from 770, we get 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

The final result is 147659.385911 with a remainder of 1.17e-05.