We look at the division of 870590 by 98 
The aim is to understand the frequency of 98 in 870590.

Step 1:
8 divided by 98 is 0 with a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 98

Step 2:
98 can be fit into 87 0 times, resulting in a remainder of 87.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 87 and we're left with 87.
Include the next digit (0) from the dividend after 87, then repeat: 870 / 98

Going ahead to step 3:
98 can be fit into 870 8 times, resulting in a remainder of 86.
Put 8 as the next digit of the answer. 
Result so far: 8.0
Subtract 784 from 870 to get 86.
Fetch the next digit (5) from the dividend, attach it to 86 and continue: 865 / 98

Going ahead to step 4:
If we divide 865 by 98, we get 8 and a remainder of 81.
Write down 8 as next digit of the result. 
Result so far: 88.0
The remainder is 81 after subtracting 784 from 865.
Fetch the next digit (9) from the dividend, attach it to 81 and continue: 819 / 98

Moving on to step 5:
The number 98 fits into 819 8 times, leaving a remainder of 35.
Use 8 as the next digit of our solution. 
Result so far: 888.0
If we subtract 784 from 819, we get 35.
Append the next digit (0) from the dividend to 35 and continue with: 350 / 98

Step 6:
If we divide 350 by 98, we get 3 and a remainder of 56.
Write down 3 as next digit of the result. 
Result so far: 8883.0
If we take 294 away from 350, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Let's proceed to step 7:
98 can be fit into 560 5 times, resulting in a remainder of 70.
Put 5 as the next digit of the answer. 
Result so far: 8883.5
If we subtract 490 from 560, we get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 8:
When dividing 700 by 98, we get 7 with a remainder of 14.
Use 7 as the next digit of our solution. 
Result so far: 8883.57
The remainder is 14 after subtracting 686 from 700.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 9:
The number 98 fits into 140 1 times, leaving a remainder of 42.
The next digit of our result is 1. 
Result so far: 8883.571
Deduct 98 from 140 and we're left with 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 10:
When dividing 420 by 98, we get 4 with a remainder of 28.
Write down 4 as next digit of the result. 
Result so far: 8883.5714
Subtracting 392 from 420 leaves us with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Step 11:
280 divided by 98 is 2 with a remainder of 84.
Use 2 as the next digit of our solution. 
Result so far: 8883.57142
The remainder is 84 after subtracting 196 from 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Going ahead to step 12:
98 can be fit into 840 8 times, resulting in a remainder of 56.
Use 8 as the next digit of our solution. 
Result so far: 8883.571428
Subtracting 784 from 840 leaves us with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Step 13:
560 divided by 98 is 5 with a remainder of 70.
Use 5 as the next digit of our solution. 
Result so far: 8883.5714285
If we take 490 away from 560, we end up with 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

Advancing to step 14:
When dividing 700 by 98, we get 7 with a remainder of 14.
Write down 7 as next digit of the result. 
Result so far: 8883.57142857
Subtracting 686 from 700 leaves us with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

After the division, we end up with 8883.57142857 and a remainder of 1.4e-08.