Let's divide 731691 by 4
The aim is to understand the frequency of 4 in 731691.

On to step 1:
When dividing 7 by 4, we get 1 with a remainder of 3.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Deduct 4 from 7 and we're left with 3.
Grab the next digit (3) from the dividend, add it to 3, then carry on: 33 / 4

Going ahead to step 2:
33 divided by 4 is 8 with a remainder of 1.
Write down 8 as next digit of the result. 
Result so far: 18.0
If we take 32 away from 33, we end up with 1.
Take the next digit (1) from the dividend and append it to 1, then repeat: 11 / 4

Going ahead to step 3:
If we divide 11 by 4, we get 2 and a remainder of 3.
Record the quotient 2 as the next digit in the result. 
Result so far: 182.0
Subtract 8 from 11 to get 3.
Grab the next digit (6) from the dividend, add it to 3, then carry on: 36 / 4

Step 4:
4 can be fit into 36 9 times, resulting in a remainder of 0.
The next digit of our result is 9. 
Result so far: 1829.0
Deduct 36 from 36 and we're left with 0.
Grab the next digit (9) from the dividend, add it to 0, then carry on: 9 / 4

Advancing to step 5:
9 divided by 4 is 2 with a remainder of 1.
The next digit of our result is 2. 
Result so far: 18292.0
Subtracting 8 from 9 leaves us with 1.
Grab the next digit (1) from the dividend, add it to 1, then carry on: 11 / 4

Let's proceed to step 6:
4 can be fit into 11 2 times, resulting in a remainder of 3.
The next digit of our result is 2. 
Result so far: 182922.0
If we subtract 8 from 11, we 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.

Let's proceed to step 7:
30 divided by 4 is 7 with a remainder of 2.
Put 7 as the next digit of the answer. 
Result so far: 182922.7
The remainder is 2 after subtracting 28 from 30.
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:
When dividing 20 by 4, we get 5 with a remainder of 0.
Use 5 as the next digit of our solution. 
Result so far: 182922.75
The remainder is 0 after subtracting 20 from 20.
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:
0 divided by 4 is 0 with a remainder of 0.
The number 0 becomes the next digit in our result. 
Result so far: 182922.75
Deduct 0 from 0 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.

Let's proceed to step 10:
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: 182922.75
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.

After the division, we end up with 182922.75 and a remainder of 0.0.