We look at the division of 8779730 by 989 
The aim is to understand the frequency of 989 in 8779730.

Step 1:
If we divide 8 by 989, we get 0 and a remainder of 8.
The next digit of our result is 0. 
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 / 989

Advancing to step 2:
When dividing 87 by 989, we get 0 with a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 87, we get 87.
Grab the next digit (7) from the dividend, add it to 87, then carry on: 877 / 989

Going ahead to step 3:
If we divide 877 by 989, we get 0 and a remainder of 877.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 877 after subtracting 0 from 877.
Bring next digit (9) of the dividend behind the 877 and repeat the process: 8779 / 989

On to step 4:
The number 989 fits into 8779 8 times, leaving a remainder of 867.
Use 8 as the next digit of our solution. 
Result so far: 8.0
Subtracting 7912 from 8779 leaves us with 867.
Append the next digit (7) from the dividend to 867 and continue with: 8677 / 989

Let's proceed to step 5:
The number 989 fits into 8677 8 times, leaving a remainder of 765.
Record the quotient 8 as the next digit in the result. 
Result so far: 88.0
Subtracting 7912 from 8677 leaves us with 765.
Fetch the next digit (3) from the dividend, attach it to 765 and continue: 7653 / 989

On to step 6:
If we divide 7653 by 989, we get 7 and a remainder of 730.
Use 7 as the next digit of our solution. 
Result so far: 887.0
Subtract 6923 from 7653 to get 730.
Bring next digit (0) of the dividend behind the 730 and repeat the process: 7300 / 989

Going ahead to step 7:
989 can be fit into 7300 7 times, resulting in a remainder of 377.
Record the quotient 7 as the next digit in the result. 
Result so far: 8877.0
The remainder is 377 after subtracting 6923 from 7300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3770, and continue the process.

Let's proceed to step 8:
3770 divided by 989 is 3 with a remainder of 803.
The next digit of our result is 3. 
Result so far: 8877.3
Subtracting 2967 from 3770 leaves us with 803.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8030, and continue the process.

Let's proceed to step 9:
When dividing 8030 by 989, we get 8 with a remainder of 118.
Put 8 as the next digit of the answer. 
Result so far: 8877.38
Deduct 7912 from 8030 and we're left with 118.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1180, and continue the process.

Moving on to step 10:
989 can be fit into 1180 1 times, resulting in a remainder of 191.
Write down 1 as next digit of the result. 
Result so far: 8877.381
Deduct 989 from 1180 and we're left with 191.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1910, and continue the process.

Going ahead to step 11:
989 can be fit into 1910 1 times, resulting in a remainder of 921.
Put 1 as the next digit of the answer. 
Result so far: 8877.3811
If we subtract 989 from 1910, we get 921.
Since there are no more digits in the dividend, we add a zero to the remainder making it 9210, and continue the process.

The final result is 8877.3811 with a remainder of 0.00921.