We divide 657525 by 20
The aim is to understand the frequency of 20 in 657525.

Advancing to step 1:
If we divide 6 by 20, we get 0 and a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 6, we end up with 6.
Append the next digit (5) from the dividend to 6 and continue with: 65 / 20

Advancing to step 2:
65 divided by 20 is 3 with a remainder of 5.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
Deduct 60 from 65 and we're left with 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 20

Moving on to step 3:
If we divide 57 by 20, we get 2 and a remainder of 17.
Write down 2 as next digit of the result. 
Result so far: 32.0
Subtracting 40 from 57 leaves us with 17.
Append the next digit (5) from the dividend to 17 and continue with: 175 / 20

Step 4:
20 goes into 175 8 times with a remainder of 15.
Put 8 as the next digit of the answer. 
Result so far: 328.0
Subtracting 160 from 175 leaves us with 15.
Grab the next digit (2) from the dividend, add it to 15, then carry on: 152 / 20

Going ahead to step 5:
152 divided by 20 is 7 with a remainder of 12.
Write down 7 as next digit of the result. 
Result so far: 3287.0
Subtracting 140 from 152 leaves us with 12.
Fetch the next digit (5) from the dividend, attach it to 12 and continue: 125 / 20

Moving on to step 6:
20 can be fit into 125 6 times, resulting in a remainder of 5.
Record the quotient 6 as the next digit in the result. 
Result so far: 32876.0
Subtracting 120 from 125 leaves us with 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Advancing to step 7:
20 can be fit into 50 2 times, resulting in a remainder of 10.
Record the quotient 2 as the next digit in the result. 
Result so far: 32876.2
If we take 40 away from 50, we end up with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 8:
When dividing 100 by 20, we get 5 with a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 32876.25
If we subtract 100 from 100, 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.

Moving on to step 9:
The number 20 fits into 0 0 times, leaving a remainder of 0.
The next digit of our result is 0. 
Result so far: 32876.25
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:
When dividing 0 by 20, we get 0 with a remainder of 0.
Record the quotient 0 as the next digit in the result. 
Result so far: 32876.25
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 32876.25, and the remainder is 0.0.