We're dividing 20517310 by 989 
The aim is to understand the frequency of 989 in 20517310.

On to step 1:
The number 989 fits into 2 0 times, leaving a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (0) from the dividend, attach it to 2 and continue: 20 / 989

Going ahead to step 2:
989 can be fit into 20 0 times, resulting in a remainder of 20.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 20, we get 20.
Grab the next digit (5) from the dividend, add it to 20, then carry on: 205 / 989

On to step 3:
If we divide 205 by 989, we get 0 and a remainder of 205.
Write down 0 as next digit of the result. 
Result so far: 0.0
Deduct 0 from 205 and we're left with 205.
Grab the next digit (1) from the dividend, add it to 205, then carry on: 2051 / 989

Step 4:
989 can be fit into 2051 2 times, resulting in a remainder of 73.
Use 2 as the next digit of our solution. 
Result so far: 2.0
The remainder is 73 after subtracting 1978 from 2051.
Grab the next digit (7) from the dividend, add it to 73, then carry on: 737 / 989

Step 5:
When dividing 737 by 989, we get 0 with a remainder of 737.
The next digit of our result is 0. 
Result so far: 20.0
The remainder is 737 after subtracting 0 from 737.
Take the next digit (3) from the dividend and append it to 737, then repeat: 7373 / 989

Let's proceed to step 6:
7373 divided by 989 is 7 with a remainder of 450.
Put 7 as the next digit of the answer. 
Result so far: 207.0
If we subtract 6923 from 7373, we get 450.
Include the next digit (1) from the dividend after 450, then repeat: 4501 / 989

Going ahead to step 7:
The number 989 fits into 4501 4 times, leaving a remainder of 545.
Record the quotient 4 as the next digit in the result. 
Result so far: 2074.0
The remainder is 545 after subtracting 3956 from 4501.
Bring next digit (0) of the dividend behind the 545 and repeat the process: 5450 / 989

Step 8:
If we divide 5450 by 989, we get 5 and a remainder of 505.
Write down 5 as next digit of the result. 
Result so far: 20745.0
Deduct 4945 from 5450 and we're left with 505.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5050, and continue the process.

Advancing to step 9:
If we divide 5050 by 989, we get 5 and a remainder of 105.
The number 5 becomes the next digit in our result. 
Result so far: 20745.5
The remainder is 105 after subtracting 4945 from 5050.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1050, and continue the process.

Let's proceed to step 10:
1050 divided by 989 is 1 with a remainder of 61.
Record the quotient 1 as the next digit in the result. 
Result so far: 20745.51
Deduct 989 from 1050 and we're left with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 11:
When dividing 610 by 989, we get 0 with a remainder of 610.
The number 0 becomes the next digit in our result. 
Result so far: 20745.51
Subtract 0 from 610 to get 610.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6100, and continue the process.

On to step 12:
989 can be fit into 6100 6 times, resulting in a remainder of 166.
Write down 6 as next digit of the result. 
Result so far: 20745.5106
The remainder is 166 after subtracting 5934 from 6100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Step 13:
989 goes into 1660 1 times with a remainder of 671.
Write down 1 as next digit of the result. 
Result so far: 20745.51061
If we subtract 989 from 1660, we get 671.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6710, and continue the process.

Step 14:
If we divide 6710 by 989, we get 6 and a remainder of 776.
The next digit of our result is 6. 
Result so far: 20745.510616
Deduct 5934 from 6710 and we're left with 776.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7760, and continue the process.

Step 15:
If we divide 7760 by 989, we get 7 and a remainder of 837.
Use 7 as the next digit of our solution. 
Result so far: 20745.5106167
If we subtract 6923 from 7760, we get 837.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8370, and continue the process.

Let's proceed to step 16:
989 goes into 8370 8 times with a remainder of 458.
The next digit of our result is 8. 
Result so far: 20745.51061678
If we take 7912 away from 8370, we end up with 458.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4580, and continue the process.

After the division, we end up with 20745.51061678 and a remainder of 4.58e-07.