We look at the division of 83372778 by 18 
The aim is to understand the frequency of 18 in 83372778.

Step 1:
18 can be fit into 8 0 times, resulting in a remainder of 8.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Include the next digit (3) from the dividend after 8, then repeat: 83 / 18

Step 2:
18 can be fit into 83 4 times, resulting in a remainder of 11.
Write down 4 as next digit of the result. 
Result so far: 4.0
Deduct 72 from 83 and we're left with 11.
Fetch the next digit (3) from the dividend, attach it to 11 and continue: 113 / 18

Step 3:
18 goes into 113 6 times with a remainder of 5.
The number 6 becomes the next digit in our result. 
Result so far: 46.0
If we take 108 away from 113, we end up with 5.
Take the next digit (7) from the dividend and append it to 5, then repeat: 57 / 18

Let's proceed to step 4:
18 can be fit into 57 3 times, resulting in a remainder of 3.
Record the quotient 3 as the next digit in the result. 
Result so far: 463.0
Deduct 54 from 57 and we're left with 3.
Grab the next digit (2) from the dividend, add it to 3, then carry on: 32 / 18

Moving on to step 5:
18 goes into 32 1 times with a remainder of 14.
Record the quotient 1 as the next digit in the result. 
Result so far: 4631.0
The remainder is 14 after subtracting 18 from 32.
Bring next digit (7) of the dividend behind the 14 and repeat the process: 147 / 18

Going ahead to step 6:
18 can be fit into 147 8 times, resulting in a remainder of 3.
Put 8 as the next digit of the answer. 
Result so far: 46318.0
Deduct 144 from 147 and we're left with 3.
Take the next digit (7) from the dividend and append it to 3, then repeat: 37 / 18

Let's proceed to step 7:
When dividing 37 by 18, we get 2 with a remainder of 1.
The next digit of our result is 2. 
Result so far: 463182.0
If we take 36 away from 37, we end up with 1.
Grab the next digit (8) from the dividend, add it to 1, then carry on: 18 / 18

Going ahead to step 8:
If we divide 18 by 18, we get 1 and a remainder of 0.
The number 1 becomes the next digit in our result. 
Result so far: 4631821.0
Deduct 18 from 18 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

On to step 9:
0 divided by 18 is 0 with a remainder of 0.
The next digit of our result is 0. 
Result so far: 4631821.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
The number 18 fits into 0 0 times, leaving a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 4631821.0
Deduct 0 from 0 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Our division results in 4631821.0 with a remaining 0.0.