647970 ÷ 4 
The aim is to understand the frequency of 4 in 647970.

On to step 1:
If we divide 6 by 4, we get 1 and a remainder of 2.
Write down 1 as next digit of the result. 
Result so far: 1.0
If we subtract 4 from 6, we get 2.
Take the next digit (4) from the dividend and append it to 2, then repeat: 24 / 4

On to step 2:
4 goes into 24 6 times with a remainder of 0.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we subtract 24 from 24, we get 0.
Include the next digit (7) from the dividend after 0, then repeat: 7 / 4

Advancing to step 3:
4 goes into 7 1 times with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 161.0
Deduct 4 from 7 and we're left with 3.
Bring next digit (9) of the dividend behind the 3 and repeat the process: 39 / 4

Going ahead to step 4:
If we divide 39 by 4, we get 9 and a remainder of 3.
Use 9 as the next digit of our solution. 
Result so far: 1619.0
If we subtract 36 from 39, we get 3.
Bring next digit (7) of the dividend behind the 3 and repeat the process: 37 / 4

Let's proceed to step 5:
4 goes into 37 9 times with a remainder of 1.
The next digit of our result is 9. 
Result so far: 16199.0
Subtract 36 from 37 to get 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 4

Going ahead to step 6:
The number 4 fits into 10 2 times, leaving a remainder of 2.
The number 2 becomes the next digit in our result. 
Result so far: 161992.0
Subtracting 8 from 10 leaves us 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 7:
20 divided by 4 is 5 with a remainder of 0.
The number 5 becomes the next digit in our result. 
Result so far: 161992.5
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.

Advancing to step 8:
The number 4 fits into 0 0 times, leaving a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 161992.5
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 9:
When dividing 0 by 4, we get 0 with a remainder of 0.
Put 0 as the next digit of the answer. 
Result so far: 161992.5
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.

The quotient of the division is 161992.5, and the remainder is 0.0.