We look at the division of 645426 by 98 
The aim is to understand the frequency of 98 in 645426.

Advancing to step 1:
When dividing 6 by 98, we get 0 with a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 6 and we're left with 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 98

Let's proceed to step 2:
If we divide 64 by 98, we get 0 and a remainder of 64.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 64 leaves us with 64.
Fetch the next digit (5) from the dividend, attach it to 64 and continue: 645 / 98

On to step 3:
When dividing 645 by 98, we get 6 with a remainder of 57.
Write down 6 as next digit of the result. 
Result so far: 6.0
The remainder is 57 after subtracting 588 from 645.
Take the next digit (4) from the dividend and append it to 57, then repeat: 574 / 98

Going ahead to step 4:
When dividing 574 by 98, we get 5 with a remainder of 84.
The number 5 becomes the next digit in our result. 
Result so far: 65.0
The remainder is 84 after subtracting 490 from 574.
Append the next digit (2) from the dividend to 84 and continue with: 842 / 98

Let's proceed to step 5:
98 can be fit into 842 8 times, resulting in a remainder of 58.
Write down 8 as next digit of the result. 
Result so far: 658.0
The remainder is 58 after subtracting 784 from 842.
Grab the next digit (6) from the dividend, add it to 58, then carry on: 586 / 98

On to step 6:
98 goes into 586 5 times with a remainder of 96.
Use 5 as the next digit of our solution. 
Result so far: 6585.0
Subtracting 490 from 586 leaves us with 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Advancing to step 7:
The number 98 fits into 960 9 times, leaving a remainder of 78.
The next digit of our result is 9. 
Result so far: 6585.9
If we take 882 away from 960, we end up with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Going ahead to step 8:
The number 98 fits into 780 7 times, leaving a remainder of 94.
Use 7 as the next digit of our solution. 
Result so far: 6585.97
If we take 686 away from 780, we end up with 94.
Since there are no more digits in the dividend, we add a zero to the remainder making it 940, and continue the process.

On to step 9:
If we divide 940 by 98, we get 9 and a remainder of 58.
Put 9 as the next digit of the answer. 
Result so far: 6585.979
The remainder is 58 after subtracting 882 from 940.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 10:
98 goes into 580 5 times with a remainder of 90.
Use 5 as the next digit of our solution. 
Result so far: 6585.9795
Subtract 490 from 580 to get 90.
Since there are no more digits in the dividend, we add a zero to the remainder making it 900, and continue the process.

Moving on to step 11:
98 can be fit into 900 9 times, resulting in a remainder of 18.
Put 9 as the next digit of the answer. 
Result so far: 6585.97959
The remainder is 18 after subtracting 882 from 900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 12:
The number 98 fits into 180 1 times, leaving a remainder of 82.
Write down 1 as next digit of the result. 
Result so far: 6585.979591
Subtracting 98 from 180 leaves us with 82.
Since there are no more digits in the dividend, we add a zero to the remainder making it 820, and continue the process.

Let's proceed to step 13:
820 divided by 98 is 8 with a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 6585.9795918
The remainder is 36 after subtracting 784 from 820.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 14:
98 can be fit into 360 3 times, resulting in a remainder of 66.
The next digit of our result is 3. 
Result so far: 6585.97959183
The remainder is 66 after subtracting 294 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

After the division, we end up with 6585.97959183 and a remainder of 6.6e-08.