Let's divide 836980 by 18
The aim is to understand the frequency of 18 in 836980.

Let's proceed to step 1:
If we divide 8 by 18, we get 0 and a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Append the next digit (3) from the dividend to 8 and continue with: 83 / 18

Step 2:
If we divide 83 by 18, we get 4 and a remainder of 11.
Use 4 as the next digit of our solution. 
Result so far: 4.0
Deduct 72 from 83 and we're left with 11.
Append the next digit (6) from the dividend to 11 and continue with: 116 / 18

Going ahead to step 3:
The number 18 fits into 116 6 times, leaving a remainder of 8.
The number 6 becomes the next digit in our result. 
Result so far: 46.0
Subtracting 108 from 116 leaves us with 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 18

Going ahead to step 4:
89 divided by 18 is 4 with a remainder of 17.
The number 4 becomes the next digit in our result. 
Result so far: 464.0
If we subtract 72 from 89, we get 17.
Append the next digit (8) from the dividend to 17 and continue with: 178 / 18

Going ahead to step 5:
18 goes into 178 9 times with a remainder of 16.
Record the quotient 9 as the next digit in the result. 
Result so far: 4649.0
If we take 162 away from 178, we end up with 16.
Fetch the next digit (0) from the dividend, attach it to 16 and continue: 160 / 18

Moving on to step 6:
When dividing 160 by 18, we get 8 with a remainder of 16.
Record the quotient 8 as the next digit in the result. 
Result so far: 46498.0
Deduct 144 from 160 and we're left with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 7:
18 can be fit into 160 8 times, resulting in a remainder of 16.
The number 8 becomes the next digit in our result. 
Result so far: 46498.8
If we take 144 away from 160, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

On to step 8:
When dividing 160 by 18, we get 8 with a remainder of 16.
Put 8 as the next digit of the answer. 
Result so far: 46498.88
Subtract 144 from 160 to get 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

The final outcome is 46498.88, with a leftover of 0.016.