Let's divide 815638 by 98
The aim is to understand the frequency of 98 in 815638.

Advancing to step 1:
If we divide 8 by 98, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Bring next digit (1) of the dividend behind the 8 and repeat the process: 81 / 98

Moving on to step 2:
When dividing 81 by 98, we get 0 with a remainder of 81.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 81 and we're left with 81.
Include the next digit (5) from the dividend after 81, then repeat: 815 / 98

Going ahead to step 3:
If we divide 815 by 98, we get 8 and a remainder of 31.
Write down 8 as next digit of the result. 
Result so far: 8.0
The remainder is 31 after subtracting 784 from 815.
Include the next digit (6) from the dividend after 31, then repeat: 316 / 98

Let's proceed to step 4:
If we divide 316 by 98, we get 3 and a remainder of 22.
Use 3 as the next digit of our solution. 
Result so far: 83.0
If we subtract 294 from 316, we get 22.
Append the next digit (3) from the dividend to 22 and continue with: 223 / 98

Step 5:
98 goes into 223 2 times with a remainder of 27.
The next digit of our result is 2. 
Result so far: 832.0
Subtracting 196 from 223 leaves us with 27.
Fetch the next digit (8) from the dividend, attach it to 27 and continue: 278 / 98

On to step 6:
98 can be fit into 278 2 times, resulting in a remainder of 82.
Put 2 as the next digit of the answer. 
Result so far: 8322.0
Deduct 196 from 278 and we're left 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.

Advancing to step 7:
98 can be fit into 820 8 times, resulting in a remainder of 36.
Use 8 as the next digit of our solution. 
Result so far: 8322.8
If we take 784 away from 820, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 8:
When dividing 360 by 98, we get 3 with a remainder of 66.
The number 3 becomes the next digit in our result. 
Result so far: 8322.83
If we subtract 294 from 360, we get 66.
Since there are no more digits in the dividend, we add a zero to the remainder making it 660, and continue the process.

Moving on to step 9:
660 divided by 98 is 6 with a remainder of 72.
Use 6 as the next digit of our solution. 
Result so far: 8322.836
If we subtract 588 from 660, we get 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 10:
The number 98 fits into 720 7 times, leaving a remainder of 34.
Record the quotient 7 as the next digit in the result. 
Result so far: 8322.8367
The remainder is 34 after subtracting 686 from 720.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Moving on to step 11:
If we divide 340 by 98, we get 3 and a remainder of 46.
Record the quotient 3 as the next digit in the result. 
Result so far: 8322.83673
If we take 294 away from 340, we end up with 46.
Since there are no more digits in the dividend, we add a zero to the remainder making it 460, and continue the process.

Moving on to step 12:
When dividing 460 by 98, we get 4 with a remainder of 68.
Write down 4 as next digit of the result. 
Result so far: 8322.836734
If we take 392 away from 460, we end up with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Step 13:
98 goes into 680 6 times with a remainder of 92.
Write down 6 as next digit of the result. 
Result so far: 8322.8367346
Subtract 588 from 680 to get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Step 14:
98 can be fit into 920 9 times, resulting in a remainder of 38.
The number 9 becomes the next digit in our result. 
Result so far: 8322.83673469
If we subtract 882 from 920, we get 38.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

The final outcome is 8322.83673469, with a leftover of 3.8e-08.