Let's divide 80435486 by 415
The aim is to understand the frequency of 415 in 80435486.

Going ahead to step 1:
8 divided by 415 is 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Grab the next digit (0) from the dividend, add it to 8, then carry on: 80 / 415

Moving on to step 2:
80 divided by 415 is 0 with a remainder of 80.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 80 after subtracting 0 from 80.
Take the next digit (4) from the dividend and append it to 80, then repeat: 804 / 415

Moving on to step 3:
If we divide 804 by 415, we get 1 and a remainder of 389.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
If we take 415 away from 804, we end up with 389.
Include the next digit (3) from the dividend after 389, then repeat: 3893 / 415

Step 4:
The number 415 fits into 3893 9 times, leaving a remainder of 158.
Use 9 as the next digit of our solution. 
Result so far: 19.0
Deduct 3735 from 3893 and we're left with 158.
Take the next digit (5) from the dividend and append it to 158, then repeat: 1585 / 415

Moving on to step 5:
When dividing 1585 by 415, we get 3 with a remainder of 340.
Record the quotient 3 as the next digit in the result. 
Result so far: 193.0
The remainder is 340 after subtracting 1245 from 1585.
Take the next digit (4) from the dividend and append it to 340, then repeat: 3404 / 415

Let's proceed to step 6:
If we divide 3404 by 415, we get 8 and a remainder of 84.
Record the quotient 8 as the next digit in the result. 
Result so far: 1938.0
If we take 3320 away from 3404, we end up with 84.
Take the next digit (8) from the dividend and append it to 84, then repeat: 848 / 415

Step 7:
If we divide 848 by 415, we get 2 and a remainder of 18.
Use 2 as the next digit of our solution. 
Result so far: 19382.0
Deduct 830 from 848 and we're left with 18.
Include the next digit (6) from the dividend after 18, then repeat: 186 / 415

Moving on to step 8:
415 goes into 186 0 times with a remainder of 186.
Record the quotient 0 as the next digit in the result. 
Result so far: 193820.0
The remainder is 186 after subtracting 0 from 186.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1860, and continue the process.

Going ahead to step 9:
If we divide 1860 by 415, we get 4 and a remainder of 200.
The number 4 becomes the next digit in our result. 
Result so far: 193820.4
Subtract 1660 from 1860 to get 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 10:
If we divide 2000 by 415, we get 4 and a remainder of 340.
The number 4 becomes the next digit in our result. 
Result so far: 193820.44
Deduct 1660 from 2000 and we're left with 340.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3400, and continue the process.

The final result is 193820.44 with a remainder of 0.34.