12137837 ÷ 989 
The aim is to understand the frequency of 989 in 12137837.

Going ahead to step 1:
When dividing 1 by 989, we get 0 with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (2) from the dividend after 1, then repeat: 12 / 989

Advancing to step 2:
If we divide 12 by 989, we get 0 and a remainder of 12.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 12 after subtracting 0 from 12.
Fetch the next digit (1) from the dividend, attach it to 12 and continue: 121 / 989

Step 3:
The number 989 fits into 121 0 times, leaving a remainder of 121.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 121, we get 121.
Fetch the next digit (3) from the dividend, attach it to 121 and continue: 1213 / 989

Advancing to step 4:
989 goes into 1213 1 times with a remainder of 224.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we take 989 away from 1213, we end up with 224.
Append the next digit (7) from the dividend to 224 and continue with: 2247 / 989

Moving on to step 5:
When dividing 2247 by 989, we get 2 with a remainder of 269.
Write down 2 as next digit of the result. 
Result so far: 12.0
Deduct 1978 from 2247 and we're left with 269.
Append the next digit (8) from the dividend to 269 and continue with: 2698 / 989

On to step 6:
When dividing 2698 by 989, we get 2 with a remainder of 720.
The next digit of our result is 2. 
Result so far: 122.0
Subtracting 1978 from 2698 leaves us with 720.
Take the next digit (3) from the dividend and append it to 720, then repeat: 7203 / 989

Step 7:
When dividing 7203 by 989, we get 7 with a remainder of 280.
Use 7 as the next digit of our solution. 
Result so far: 1227.0
Subtract 6923 from 7203 to get 280.
Include the next digit (7) from the dividend after 280, then repeat: 2807 / 989

Moving on to step 8:
2807 divided by 989 is 2 with a remainder of 829.
The number 2 becomes the next digit in our result. 
Result so far: 12272.0
Deduct 1978 from 2807 and we're left with 829.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8290, and continue the process.

On to step 9:
989 can be fit into 8290 8 times, resulting in a remainder of 378.
Write down 8 as next digit of the result. 
Result so far: 12272.8
Subtract 7912 from 8290 to get 378.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3780, and continue the process.

Moving on to step 10:
If we divide 3780 by 989, we get 3 and a remainder of 813.
Use 3 as the next digit of our solution. 
Result so far: 12272.83
If we take 2967 away from 3780, we end up with 813.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8130, and continue the process.

Moving on to step 11:
When dividing 8130 by 989, we get 8 with a remainder of 218.
Record the quotient 8 as the next digit in the result. 
Result so far: 12272.838
Subtracting 7912 from 8130 leaves us with 218.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2180, and continue the process.

On to step 12:
If we divide 2180 by 989, we get 2 and a remainder of 202.
Record the quotient 2 as the next digit in the result. 
Result so far: 12272.8382
Subtract 1978 from 2180 to get 202.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2020, and continue the process.

Let's proceed to step 13:
The number 989 fits into 2020 2 times, leaving a remainder of 42.
Record the quotient 2 as the next digit in the result. 
Result so far: 12272.83822
Deduct 1978 from 2020 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.

The final outcome is 12272.83822, with a leftover of 4.2e-05.