We divide 155307 by 20
The aim is to understand the frequency of 20 in 155307.

Advancing to step 1:
20 can be fit into 1 0 times, resulting in a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Append the next digit (5) from the dividend to 1 and continue with: 15 / 20

On to step 2:
The number 20 fits into 15 0 times, leaving a remainder of 15.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 15, we get 15.
Include the next digit (5) from the dividend after 15, then repeat: 155 / 20

Advancing to step 3:
When dividing 155 by 20, we get 7 with a remainder of 15.
Record the quotient 7 as the next digit in the result. 
Result so far: 7.0
Deduct 140 from 155 and we're left with 15.
Append the next digit (3) from the dividend to 15 and continue with: 153 / 20

Let's proceed to step 4:
If we divide 153 by 20, we get 7 and a remainder of 13.
Use 7 as the next digit of our solution. 
Result so far: 77.0
The remainder is 13 after subtracting 140 from 153.
Append the next digit (0) from the dividend to 13 and continue with: 130 / 20

Going ahead to step 5:
130 divided by 20 is 6 with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 776.0
Subtract 120 from 130 to get 10.
Append the next digit (7) from the dividend to 10 and continue with: 107 / 20

Going ahead to step 6:
20 goes into 107 5 times with a remainder of 7.
Use 5 as the next digit of our solution. 
Result so far: 7765.0
Subtract 100 from 107 to get 7.
Since there are no more digits in the dividend, we add a zero to the remainder making it 70, and continue the process.

Let's proceed to step 7:
When dividing 70 by 20, we get 3 with a remainder of 10.
The next digit of our result is 3. 
Result so far: 7765.3
Subtract 60 from 70 to get 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Moving on to step 8:
When dividing 100 by 20, we get 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 7765.35
Subtracting 100 from 100 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.

Moving on to step 9:
If we divide 0 by 20, we get 0 and a remainder of 0.
The next digit of our result is 0. 
Result so far: 7765.35
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.

Advancing to step 10:
The number 20 fits into 0 0 times, leaving a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 7765.35
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.

The quotient of the division is 7765.35, and the remainder is 0.0.