We look at the division of 15703185 by 820 
The aim is to understand the frequency of 820 in 15703185.

Let's proceed to step 1:
The number 820 fits into 1 0 times, leaving a remainder of 1.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 1, we end up with 1.
Include the next digit (5) from the dividend after 1, then repeat: 15 / 820

Advancing to step 2:
When dividing 15 by 820, we get 0 with 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.
Bring next digit (7) of the dividend behind the 15 and repeat the process: 157 / 820

On to step 3:
The number 820 fits into 157 0 times, leaving a remainder of 157.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 157 after subtracting 0 from 157.
Grab the next digit (0) from the dividend, add it to 157, then carry on: 1570 / 820

On to step 4:
The number 820 fits into 1570 1 times, leaving a remainder of 750.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtract 820 from 1570 to get 750.
Fetch the next digit (3) from the dividend, attach it to 750 and continue: 7503 / 820

Step 5:
7503 divided by 820 is 9 with a remainder of 123.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Subtract 7380 from 7503 to get 123.
Include the next digit (1) from the dividend after 123, then repeat: 1231 / 820

Going ahead to step 6:
1231 divided by 820 is 1 with a remainder of 411.
The number 1 becomes the next digit in our result. 
Result so far: 191.0
If we subtract 820 from 1231, we get 411.
Append the next digit (8) from the dividend to 411 and continue with: 4118 / 820

Step 7:
4118 divided by 820 is 5 with a remainder of 18.
Write down 5 as next digit of the result. 
Result so far: 1915.0
If we take 4100 away from 4118, we end up with 18.
Grab the next digit (5) from the dividend, add it to 18, then carry on: 185 / 820

Going ahead to step 8:
820 can be fit into 185 0 times, resulting in a remainder of 185.
The number 0 becomes the next digit in our result. 
Result so far: 19150.0
If we subtract 0 from 185, we get 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Let's proceed to step 9:
1850 divided by 820 is 2 with a remainder of 210.
Write down 2 as next digit of the result. 
Result so far: 19150.2
If we take 1640 away from 1850, we end up with 210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2100, and continue the process.

Step 10:
The number 820 fits into 2100 2 times, leaving a remainder of 460.
Write down 2 as next digit of the result. 
Result so far: 19150.22
Subtract 1640 from 2100 to get 460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4600, and continue the process.

In conclusion, the division gives 19150.22 with a balance of 0.46.