We look at the division of 693418 by 20 
The aim is to understand the frequency of 20 in 693418.

Going ahead to step 1:
If we divide 6 by 20, we get 0 and a remainder of 6.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Fetch the next digit (9) from the dividend, attach it to 6 and continue: 69 / 20

Advancing to step 2:
The number 20 fits into 69 3 times, leaving a remainder of 9.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Subtracting 60 from 69 leaves us with 9.
Append the next digit (3) from the dividend to 9 and continue with: 93 / 20

Advancing to step 3:
93 divided by 20 is 4 with a remainder of 13.
Put 4 as the next digit of the answer. 
Result so far: 34.0
Deduct 80 from 93 and we're left with 13.
Fetch the next digit (4) from the dividend, attach it to 13 and continue: 134 / 20

Moving on to step 4:
134 divided by 20 is 6 with a remainder of 14.
The number 6 becomes the next digit in our result. 
Result so far: 346.0
If we take 120 away from 134, we end up with 14.
Include the next digit (1) from the dividend after 14, then repeat: 141 / 20

Step 5:
The number 20 fits into 141 7 times, leaving a remainder of 1.
Write down 7 as next digit of the result. 
Result so far: 3467.0
If we take 140 away from 141, we end up with 1.
Fetch the next digit (8) from the dividend, attach it to 1 and continue: 18 / 20

On to step 6:
If we divide 18 by 20, we get 0 and a remainder of 18.
The number 0 becomes the next digit in our result. 
Result so far: 34670.0
If we take 0 away from 18, we end up with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Let's proceed to step 7:
20 goes into 180 9 times with a remainder of 0.
Write down 9 as next digit of the result. 
Result so far: 34670.9
The remainder is 0 after subtracting 180 from 180.
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 8:
If we divide 0 by 20, we get 0 and a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 34670.9
If we subtract 0 from 0, we get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Advancing to step 9:
0 divided by 20 is 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 34670.9
Subtracting 0 from 0 leaves us 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.

The quotient of the division is 34670.9, and the remainder is 0.0.