840263 ÷ 4 
The aim is to understand the frequency of 4 in 840263.

Moving on to step 1:
If we divide 8 by 4, we get 2 and a remainder of 0.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Deduct 8 from 8 and we're left with 0.
Bring next digit (4) of the dividend behind the 0 and repeat the process: 4 / 4

Let's proceed to step 2:
4 goes into 4 1 times with a remainder of 0.
The next digit of our result is 1. 
Result so far: 21.0
If we take 4 away from 4, we end up with 0.
Bring next digit (0) of the dividend behind the 0 and repeat the process: 0 / 4

Step 3:
When dividing 0 by 4, we get 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 210.0
Deduct 0 from 0 and we're left with 0.
Fetch the next digit (2) from the dividend, attach it to 0 and continue: 2 / 4

Advancing to step 4:
4 goes into 2 0 times with a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 2100.0
If we subtract 0 from 2, we get 2.
Fetch the next digit (6) from the dividend, attach it to 2 and continue: 26 / 4

On to step 5:
The number 4 fits into 26 6 times, leaving a remainder of 2.
The next digit of our result is 6. 
Result so far: 21006.0
The remainder is 2 after subtracting 24 from 26.
Take the next digit (3) from the dividend and append it to 2, then repeat: 23 / 4

Let's proceed to step 6:
23 divided by 4 is 5 with a remainder of 3.
Put 5 as the next digit of the answer. 
Result so far: 210065.0
Subtract 20 from 23 to get 3.
Since there are no more digits in the dividend, we add a zero to the remainder making it 30, and continue the process.

Moving on to step 7:
4 can be fit into 30 7 times, resulting in a remainder of 2.
The next digit of our result is 7. 
Result so far: 210065.7
If we take 28 away from 30, we end up with 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:
The number 4 fits into 20 5 times, leaving a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 210065.75
If we take 20 away from 20, 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.

On to step 9:
4 goes into 0 0 times with a remainder of 0.
The next digit of our result is 0. 
Result so far: 210065.75
If we subtract 0 from 0, we 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.

Step 10:
0 divided by 4 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 210065.75
Subtracting 0 from 0 leaves us 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.

After the division, we end up with 210065.75 and a remainder of 0.0.