Let's divide 74940272 by 420
The aim is to understand the frequency of 420 in 74940272.

Let's proceed to step 1:
7 divided by 420 is 0 with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Bring next digit (4) of the dividend behind the 7 and repeat the process: 74 / 420

Step 2:
If we divide 74 by 420, we get 0 and a remainder of 74.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 74, we end up with 74.
Append the next digit (9) from the dividend to 74 and continue with: 749 / 420

Step 3:
When dividing 749 by 420, we get 1 with a remainder of 329.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we take 420 away from 749, we end up with 329.
Bring next digit (4) of the dividend behind the 329 and repeat the process: 3294 / 420

Advancing to step 4:
The number 420 fits into 3294 7 times, leaving a remainder of 354.
The number 7 becomes the next digit in our result. 
Result so far: 17.0
Deduct 2940 from 3294 and we're left with 354.
Include the next digit (0) from the dividend after 354, then repeat: 3540 / 420

Let's proceed to step 5:
420 can be fit into 3540 8 times, resulting in a remainder of 180.
Put 8 as the next digit of the answer. 
Result so far: 178.0
Subtracting 3360 from 3540 leaves us with 180.
Grab the next digit (2) from the dividend, add it to 180, then carry on: 1802 / 420

Advancing to step 6:
1802 divided by 420 is 4 with a remainder of 122.
Put 4 as the next digit of the answer. 
Result so far: 1784.0
If we subtract 1680 from 1802, we get 122.
Grab the next digit (7) from the dividend, add it to 122, then carry on: 1227 / 420

Going ahead to step 7:
420 can be fit into 1227 2 times, resulting in a remainder of 387.
The number 2 becomes the next digit in our result. 
Result so far: 17842.0
If we subtract 840 from 1227, we get 387.
Bring next digit (2) of the dividend behind the 387 and repeat the process: 3872 / 420

Going ahead to step 8:
420 can be fit into 3872 9 times, resulting in a remainder of 92.
The number 9 becomes the next digit in our result. 
Result so far: 178429.0
Subtract 3780 from 3872 to get 92.
Since there are no more digits in the dividend, we add a zero to the remainder making it 920, and continue the process.

Step 9:
If we divide 920 by 420, we get 2 and a remainder of 80.
Use 2 as the next digit of our solution. 
Result so far: 178429.2
Deduct 840 from 920 and we're left with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Step 10:
When dividing 800 by 420, we get 1 with a remainder of 380.
The next digit of our result is 1. 
Result so far: 178429.21
Subtract 420 from 800 to get 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

Step 11:
When dividing 3800 by 420, we get 9 with a remainder of 20.
Use 9 as the next digit of our solution. 
Result so far: 178429.219
Deduct 3780 from 3800 and we're left with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 12:
The number 420 fits into 200 0 times, leaving a remainder of 200.
The number 0 becomes the next digit in our result. 
Result so far: 178429.219
If we subtract 0 from 200, we 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.

Let's proceed to step 13:
The number 420 fits into 2000 4 times, leaving a remainder of 320.
Put 4 as the next digit of the answer. 
Result so far: 178429.21904
Subtracting 1680 from 2000 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 14:
If we divide 3200 by 420, we get 7 and a remainder of 260.
The number 7 becomes the next digit in our result. 
Result so far: 178429.219047
Subtract 2940 from 3200 to get 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Step 15:
When dividing 2600 by 420, we get 6 with a remainder of 80.
Record the quotient 6 as the next digit in the result. 
Result so far: 178429.2190476
If we take 2520 away from 2600, we end up with 80.
Since there are no more digits in the dividend, we add a zero to the remainder making it 800, and continue the process.

Moving on to step 16:
The number 420 fits into 800 1 times, leaving a remainder of 380.
Write down 1 as next digit of the result. 
Result so far: 178429.21904761
If we take 420 away from 800, we end up with 380.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3800, and continue the process.

The final outcome is 178429.21904761, with a leftover of 3.8e-07.