6420242 divided by 4 
The aim is to understand the frequency of 4 in 6420242.

Going ahead to step 1:
If we divide 6 by 4, we get 1 and a remainder of 2.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 4 from 6 and we're left with 2.
Bring next digit (4) of the dividend behind the 2 and repeat the process: 24 / 4

Advancing to step 2:
If we divide 24 by 4, we get 6 and a remainder of 0.
The next digit of our result is 6. 
Result so far: 16.0
Deduct 24 from 24 and we're left with 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 4

Moving on to step 3:
4 can be fit into 2 0 times, resulting in a remainder of 2.
The next digit of our result is 0. 
Result so far: 160.0
If we subtract 0 from 2, we get 2.
Include the next digit (0) from the dividend after 2, then repeat: 20 / 4

On to step 4:
4 goes into 20 5 times with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 1605.0
If we subtract 20 from 20, we get 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 4

Let's proceed to step 5:
If we divide 2 by 4, we get 0 and a remainder of 2.
Use 0 as the next digit of our solution. 
Result so far: 16050.0
Subtract 0 from 2 to get 2.
Grab the next digit (4) from the dividend, add it to 2, then carry on: 24 / 4

Advancing to step 6:
The number 4 fits into 24 6 times, leaving a remainder of 0.
The next digit of our result is 6. 
Result so far: 160506.0
If we subtract 24 from 24, we get 0.
Include the next digit (2) from the dividend after 0, then repeat: 2 / 4

Let's proceed to step 7:
The number 4 fits into 2 0 times, leaving a remainder of 2.
Record the quotient 0 as the next digit in the result. 
Result so far: 1605060.0
Subtract 0 from 2 to get 2.
Since there are no more digits in the dividend, we add a zero to the remainder making it 20, and continue the process.

Going ahead to step 8:
20 divided by 4 is 5 with a remainder of 0.
Put 5 as the next digit of the answer. 
Result so far: 1605060.5
Deduct 20 from 20 and we're left with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Step 9:
The number 4 fits into 0 0 times, leaving a remainder of 0.
Use 0 as the next digit of our solution. 
Result so far: 1605060.5
Subtract 0 from 0 to get 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

Going ahead to step 10:
When dividing 0 by 4, we get 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 1605060.5
If we take 0 away from 0, we end up with 0.
Since there are no more digits in the dividend, we add a zero to the remainder making it 0, and continue the process.

The quotient of the division is 1605060.5, and the remainder is 0.0.