Let's divide 72053920 by 415
The aim is to understand the frequency of 415 in 72053920.

Step 1:
The number 415 fits into 7 0 times, leaving 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.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 415

On to step 2:
415 goes into 72 0 times with a remainder of 72.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 72 and we're left with 72.
Fetch the next digit (0) from the dividend, attach it to 72 and continue: 720 / 415

On to step 3:
415 goes into 720 1 times with a remainder of 305.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtracting 415 from 720 leaves us with 305.
Append the next digit (5) from the dividend to 305 and continue with: 3055 / 415

Step 4:
3055 divided by 415 is 7 with a remainder of 150.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
If we subtract 2905 from 3055, we get 150.
Bring next digit (3) of the dividend behind the 150 and repeat the process: 1503 / 415

Step 5:
415 goes into 1503 3 times with a remainder of 258.
Use 3 as the next digit of our solution. 
Result so far: 173.0
Subtracting 1245 from 1503 leaves us with 258.
Include the next digit (9) from the dividend after 258, then repeat: 2589 / 415

Moving on to step 6:
When dividing 2589 by 415, we get 6 with a remainder of 99.
Record the quotient 6 as the next digit in the result. 
Result so far: 1736.0
If we take 2490 away from 2589, we end up with 99.
Take the next digit (2) from the dividend and append it to 99, then repeat: 992 / 415

On to step 7:
The number 415 fits into 992 2 times, leaving a remainder of 162.
Put 2 as the next digit of the answer. 
Result so far: 17362.0
If we subtract 830 from 992, we get 162.
Append the next digit (0) from the dividend to 162 and continue with: 1620 / 415

Step 8:
415 goes into 1620 3 times with a remainder of 375.
Use 3 as the next digit of our solution. 
Result so far: 173623.0
Subtracting 1245 from 1620 leaves us with 375.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3750, and continue the process.

Moving on to step 9:
415 goes into 3750 9 times with a remainder of 15.
Use 9 as the next digit of our solution. 
Result so far: 173623.9
The remainder is 15 after subtracting 3735 from 3750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 10:
If we divide 150 by 415, we get 0 and a remainder of 150.
Record the quotient 0 as the next digit in the result. 
Result so far: 173623.9
Subtracting 0 from 150 leaves us with 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1500, and continue the process.

On to step 11:
The number 415 fits into 1500 3 times, leaving a remainder of 255.
Record the quotient 3 as the next digit in the result. 
Result so far: 173623.903
If we subtract 1245 from 1500, we get 255.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2550, and continue the process.

Moving on to step 12:
2550 divided by 415 is 6 with a remainder of 60.
The next digit of our result is 6. 
Result so far: 173623.9036
Subtracting 2490 from 2550 leaves us with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 13:
When dividing 600 by 415, we get 1 with a remainder of 185.
Put 1 as the next digit of the answer. 
Result so far: 173623.90361
Subtracting 415 from 600 leaves us 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 14:
415 goes into 1850 4 times with a remainder of 190.
Write down 4 as next digit of the result. 
Result so far: 173623.903614
Subtract 1660 from 1850 to get 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1900, and continue the process.

On to step 15:
If we divide 1900 by 415, we get 4 and a remainder of 240.
The next digit of our result is 4. 
Result so far: 173623.9036144
If we take 1660 away from 1900, we end up 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.

The final outcome is 173623.9036144, with a leftover of 2.4e-06.