We divide 654810 by 4
The aim is to understand the frequency of 4 in 654810.

On to step 1:
When dividing 6 by 4, we get 1 with a remainder of 2.
Use 1 as the next digit of our solution. 
Result so far: 1.0
Subtracting 4 from 6 leaves us with 2.
Include the next digit (5) from the dividend after 2, then repeat: 25 / 4

Let's proceed to step 2:
25 divided by 4 is 6 with a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 16.0
If we subtract 24 from 25, we get 1.
Grab the next digit (4) from the dividend, add it to 1, then carry on: 14 / 4

Advancing to step 3:
When dividing 14 by 4, we get 3 with a remainder of 2.
Write down 3 as next digit of the result. 
Result so far: 163.0
If we take 12 away from 14, we end up with 2.
Fetch the next digit (8) from the dividend, attach it to 2 and continue: 28 / 4

On to step 4:
The number 4 fits into 28 7 times, leaving a remainder of 0.
The number 7 becomes the next digit in our result. 
Result so far: 1637.0
If we subtract 28 from 28, we get 0.
Include the next digit (1) from the dividend after 0, then repeat: 1 / 4

Advancing to step 5:
If we divide 1 by 4, we get 0 and a remainder of 1.
Record the quotient 0 as the next digit in the result. 
Result so far: 16370.0
The remainder is 1 after subtracting 0 from 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 4

Let's proceed to step 6:
If we divide 10 by 4, we get 2 and a remainder of 2.
Put 2 as the next digit of the answer. 
Result so far: 163702.0
Subtract 8 from 10 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 7:
If we divide 20 by 4, we get 5 and a remainder of 0.
Record the quotient 5 as the next digit in the result. 
Result so far: 163702.5
Subtract 20 from 20 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.

On to step 8:
0 divided by 4 is 0 with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 163702.5
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.

Moving on to step 9:
4 goes into 0 0 times with a remainder of 0.
Write down 0 as next digit of the result. 
Result so far: 163702.5
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.

The quotient of the division is 163702.5, and the remainder is 0.0.