We're dividing 2372450 by 405 
The aim is to understand the frequency of 405 in 2372450.

Going ahead to step 1:
When dividing 2 by 405, we get 0 with a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 2 after subtracting 0 from 2.
Append the next digit (3) from the dividend to 2 and continue with: 23 / 405

On to step 2:
405 can be fit into 23 0 times, resulting in a remainder of 23.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 23 to get 23.
Grab the next digit (7) from the dividend, add it to 23, then carry on: 237 / 405

Step 3:
The number 405 fits into 237 0 times, leaving a remainder of 237.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 237 leaves us with 237.
Grab the next digit (2) from the dividend, add it to 237, then carry on: 2372 / 405

On to step 4:
The number 405 fits into 2372 5 times, leaving a remainder of 347.
Use 5 as the next digit of our solution. 
Result so far: 5.0
The remainder is 347 after subtracting 2025 from 2372.
Take the next digit (4) from the dividend and append it to 347, then repeat: 3474 / 405

On to step 5:
When dividing 3474 by 405, we get 8 with a remainder of 234.
Record the quotient 8 as the next digit in the result. 
Result so far: 58.0
If we subtract 3240 from 3474, we get 234.
Take the next digit (5) from the dividend and append it to 234, then repeat: 2345 / 405

Moving on to step 6:
405 can be fit into 2345 5 times, resulting in a remainder of 320.
Record the quotient 5 as the next digit in the result. 
Result so far: 585.0
If we subtract 2025 from 2345, we get 320.
Take the next digit (0) from the dividend and append it to 320, then repeat: 3200 / 405

Let's proceed to step 7:
When dividing 3200 by 405, we get 7 with a remainder of 365.
Put 7 as the next digit of the answer. 
Result so far: 5857.0
Subtract 2835 from 3200 to get 365.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3650, and continue the process.

Step 8:
If we divide 3650 by 405, we get 9 and a remainder of 5.
Write down 9 as next digit of the result. 
Result so far: 5857.9
Subtract 3645 from 3650 to get 5.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

On to step 9:
405 can be fit into 50 0 times, resulting in a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 5857.9
If we take 0 away from 50, we end up with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 10:
If we divide 500 by 405, we get 1 and a remainder of 95.
Write down 1 as next digit of the result. 
Result so far: 5857.901
Subtract 405 from 500 to get 95.
Since there are no more digits in the dividend, we add a zero to the remainder making it 950, and continue the process.

Going ahead to step 11:
405 goes into 950 2 times with a remainder of 140.
Write down 2 as next digit of the result. 
Result so far: 5857.9012
Deduct 810 from 950 and we're left with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

Going ahead to step 12:
405 goes into 1400 3 times with a remainder of 185.
Put 3 as the next digit of the answer. 
Result so far: 5857.90123
Subtract 1215 from 1400 to get 185.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1850, and continue the process.

On to step 13:
If we divide 1850 by 405, we get 4 and a remainder of 230.
Put 4 as the next digit of the answer. 
Result so far: 5857.901234
Subtracting 1620 from 1850 leaves us with 230.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2300, and continue the process.

Step 14:
2300 divided by 405 is 5 with a remainder of 275.
The number 5 becomes the next digit in our result. 
Result so far: 5857.9012345
The remainder is 275 after subtracting 2025 from 2300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2750, and continue the process.

Going ahead to step 15:
405 can be fit into 2750 6 times, resulting in a remainder of 320.
Write down 6 as next digit of the result. 
Result so far: 5857.90123456
Subtract 2430 from 2750 to get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

After the division, we end up with 5857.90123456 and a remainder of 3.2e-07.