35403810 divided by 415 
The aim is to understand the frequency of 415 in 35403810.

On to step 1:
3 divided by 415 is 0 with a remainder of 3.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Bring next digit (5) of the dividend behind the 3 and repeat the process: 35 / 415

Going ahead to step 2:
When dividing 35 by 415, we get 0 with a remainder of 35.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 35 and we're left with 35.
Take the next digit (4) from the dividend and append it to 35, then repeat: 354 / 415

Step 3:
354 divided by 415 is 0 with a remainder of 354.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 354 after subtracting 0 from 354.
Grab the next digit (0) from the dividend, add it to 354, then carry on: 3540 / 415

Advancing to step 4:
415 can be fit into 3540 8 times, resulting in a remainder of 220.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 3320 away from 3540, we end up with 220.
Fetch the next digit (3) from the dividend, attach it to 220 and continue: 2203 / 415

Advancing to step 5:
If we divide 2203 by 415, we get 5 and a remainder of 128.
Write down 5 as next digit of the result. 
Result so far: 85.0
If we subtract 2075 from 2203, we get 128.
Take the next digit (8) from the dividend and append it to 128, then repeat: 1288 / 415

Going ahead to step 6:
If we divide 1288 by 415, we get 3 and a remainder of 43.
Use 3 as the next digit of our solution. 
Result so far: 853.0
Deduct 1245 from 1288 and we're left with 43.
Fetch the next digit (1) from the dividend, attach it to 43 and continue: 431 / 415

On to step 7:
415 goes into 431 1 times with a remainder of 16.
The number 1 becomes the next digit in our result. 
Result so far: 8531.0
Subtract 415 from 431 to get 16.
Fetch the next digit (0) from the dividend, attach it to 16 and continue: 160 / 415

Advancing to step 8:
415 can be fit into 160 0 times, resulting in a remainder of 160.
Use 0 as the next digit of our solution. 
Result so far: 85310.0
Subtract 0 from 160 to get 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

Moving on to step 9:
415 can be fit into 1600 3 times, resulting in a remainder of 355.
Put 3 as the next digit of the answer. 
Result so far: 85310.3
Subtracting 1245 from 1600 leaves us with 355.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Going ahead to step 10:
If we divide 3550 by 415, we get 8 and a remainder of 230.
Write down 8 as next digit of the result. 
Result so far: 85310.38
If we subtract 3320 from 3550, we get 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Let's proceed to step 11:
2300 divided by 415 is 5 with a remainder of 225.
Use 5 as the next digit of our solution. 
Result so far: 85310.385
If we subtract 2075 from 2300, we get 225.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2250, and continue the process.

On to step 12:
The number 415 fits into 2250 5 times, leaving a remainder of 175.
Write down 5 as next digit of the result. 
Result so far: 85310.3855
Deduct 2075 from 2250 and we're left with 175.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1750, and continue the process.

The final result is 85310.3855 with a remainder of 0.00175.