Let's divide 815415 by 49
The aim is to understand the frequency of 49 in 815415.

On to step 1:
If we divide 8 by 49, we get 0 and a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 8 after subtracting 0 from 8.
Append the next digit (1) from the dividend to 8 and continue with: 81 / 49

Advancing to step 2:
When dividing 81 by 49, we get 1 with a remainder of 32.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 49 from 81, we get 32.
Bring next digit (5) of the dividend behind the 32 and repeat the process: 325 / 49

Moving on to step 3:
325 divided by 49 is 6 with a remainder of 31.
The next digit of our result is 6. 
Result so far: 16.0
Subtracting 294 from 325 leaves us with 31.
Bring next digit (4) of the dividend behind the 31 and repeat the process: 314 / 49

Moving on to step 4:
If we divide 314 by 49, we get 6 and a remainder of 20.
The next digit of our result is 6. 
Result so far: 166.0
If we take 294 away from 314, we end up with 20.
Bring next digit (1) of the dividend behind the 20 and repeat the process: 201 / 49

Step 5:
If we divide 201 by 49, we get 4 and a remainder of 5.
Record the quotient 4 as the next digit in the result. 
Result so far: 1664.0
Subtracting 196 from 201 leaves us with 5.
Append the next digit (5) from the dividend to 5 and continue with: 55 / 49

Let's proceed to step 6:
49 goes into 55 1 times with a remainder of 6.
Write down 1 as next digit of the result. 
Result so far: 16641.0
Deduct 49 from 55 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Moving on to step 7:
If we divide 60 by 49, we get 1 and a remainder of 11.
The number 1 becomes the next digit in our result. 
Result so far: 16641.1
If we subtract 49 from 60, we get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Moving on to step 8:
110 divided by 49 is 2 with a remainder of 12.
Put 2 as the next digit of the answer. 
Result so far: 16641.12
The remainder is 12 after subtracting 98 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Moving on to step 9:
When dividing 120 by 49, we get 2 with a remainder of 22.
Put 2 as the next digit of the answer. 
Result so far: 16641.122
The remainder is 22 after subtracting 98 from 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

The final outcome is 16641.122, with a leftover of 0.0022.