71725838 divided by 415 
The aim is to understand the frequency of 415 in 71725838.

Step 1:
415 goes into 7 0 times with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (1) from the dividend after 7, then repeat: 71 / 415

On to step 2:
If we divide 71 by 415, we get 0 and a remainder of 71.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 71 leaves us with 71.
Include the next digit (7) from the dividend after 71, then repeat: 717 / 415

Let's proceed to step 3:
The number 415 fits into 717 1 times, leaving a remainder of 302.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 302 after subtracting 415 from 717.
Grab the next digit (2) from the dividend, add it to 302, then carry on: 3022 / 415

Moving on to step 4:
The number 415 fits into 3022 7 times, leaving a remainder of 117.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Subtract 2905 from 3022 to get 117.
Append the next digit (5) from the dividend to 117 and continue with: 1175 / 415

Step 5:
If we divide 1175 by 415, we get 2 and a remainder of 345.
The number 2 becomes the next digit in our result. 
Result so far: 172.0
If we subtract 830 from 1175, we get 345.
Grab the next digit (8) from the dividend, add it to 345, then carry on: 3458 / 415

On to step 6:
When dividing 3458 by 415, we get 8 with a remainder of 138.
Write down 8 as next digit of the result. 
Result so far: 1728.0
If we take 3320 away from 3458, we end up with 138.
Fetch the next digit (3) from the dividend, attach it to 138 and continue: 1383 / 415

Advancing to step 7:
If we divide 1383 by 415, we get 3 and a remainder of 138.
Write down 3 as next digit of the result. 
Result so far: 17283.0
Subtract 1245 from 1383 to get 138.
Include the next digit (8) from the dividend after 138, then repeat: 1388 / 415

Let's proceed to step 8:
415 can be fit into 1388 3 times, resulting in a remainder of 143.
Write down 3 as next digit of the result. 
Result so far: 172833.0
If we take 1245 away from 1388, we end up with 143.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1430, and continue the process.

Advancing to step 9:
415 goes into 1430 3 times with a remainder of 185.
The number 3 becomes the next digit in our result. 
Result so far: 172833.3
Deduct 1245 from 1430 and we're left with 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

Step 10:
When dividing 1850 by 415, we get 4 with a remainder of 190.
Put 4 as the next digit of the answer. 
Result so far: 172833.34
If we take 1660 away from 1850, we end up with 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

Going ahead to step 11:
415 can be fit into 1900 4 times, resulting in a remainder of 240.
Use 4 as the next digit of our solution. 
Result so far: 172833.344
Deduct 1660 from 1900 and we're left with 240.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2400, and continue the process.

After the division, we end up with 172833.344 and a remainder of 0.024.