We look at the division of 98780997 by 902 
The aim is to understand the frequency of 902 in 98780997.

Let's proceed to step 1:
If we divide 9 by 902, we get 0 and a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 9 to get 9.
Append the next digit (8) from the dividend to 9 and continue with: 98 / 902

Advancing to step 2:
902 goes into 98 0 times with a remainder of 98.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 98 after subtracting 0 from 98.
Bring next digit (7) of the dividend behind the 98 and repeat the process: 987 / 902

Let's proceed to step 3:
If we divide 987 by 902, we get 1 and a remainder of 85.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 85 after subtracting 902 from 987.
Take the next digit (8) from the dividend and append it to 85, then repeat: 858 / 902

Advancing to step 4:
When dividing 858 by 902, we get 0 with a remainder of 858.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtracting 0 from 858 leaves us with 858.
Bring next digit (0) of the dividend behind the 858 and repeat the process: 8580 / 902

Step 5:
When dividing 8580 by 902, we get 9 with a remainder of 462.
Use 9 as the next digit of our solution. 
Result so far: 109.0
If we subtract 8118 from 8580, we get 462.
Include the next digit (9) from the dividend after 462, then repeat: 4629 / 902

Advancing to step 6:
If we divide 4629 by 902, we get 5 and a remainder of 119.
Record the quotient 5 as the next digit in the result. 
Result so far: 1095.0
Subtracting 4510 from 4629 leaves us with 119.
Bring next digit (9) of the dividend behind the 119 and repeat the process: 1199 / 902

Advancing to step 7:
If we divide 1199 by 902, we get 1 and a remainder of 297.
Record the quotient 1 as the next digit in the result. 
Result so far: 10951.0
Subtracting 902 from 1199 leaves us with 297.
Bring next digit (7) of the dividend behind the 297 and repeat the process: 2977 / 902

Step 8:
2977 divided by 902 is 3 with a remainder of 271.
Use 3 as the next digit of our solution. 
Result so far: 109513.0
If we subtract 2706 from 2977, we get 271.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2710, and continue the process.

Step 9:
902 can be fit into 2710 3 times, resulting in a remainder of 4.
Record the quotient 3 as the next digit in the result. 
Result so far: 109513.3
If we take 2706 away from 2710, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 10:
902 can be fit into 40 0 times, resulting in a remainder of 40.
The number 0 becomes the next digit in our result. 
Result so far: 109513.3
The remainder is 40 after subtracting 0 from 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Step 11:
400 divided by 902 is 0 with a remainder of 400.
Put 0 as the next digit of the answer. 
Result so far: 109513.3
Subtracting 0 from 400 leaves us with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

In conclusion, the division gives 109513.3 with a balance of 0.04.