477344 ÷ 21 
The aim is to understand the frequency of 21 in 477344.

Moving on to step 1:
4 divided by 21 is 0 with a remainder of 4.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 4 leaves us with 4.
Take the next digit (7) from the dividend and append it to 4, then repeat: 47 / 21

Moving on to step 2:
21 can be fit into 47 2 times, resulting in a remainder of 5.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
If we subtract 42 from 47, we get 5.
Fetch the next digit (7) from the dividend, attach it to 5 and continue: 57 / 21

Moving on to step 3:
21 can be fit into 57 2 times, resulting in a remainder of 15.
Put 2 as the next digit of the answer. 
Result so far: 22.0
If we subtract 42 from 57, we get 15.
Take the next digit (3) from the dividend and append it to 15, then repeat: 153 / 21

Moving on to step 4:
The number 21 fits into 153 7 times, leaving a remainder of 6.
The next digit of our result is 7. 
Result so far: 227.0
Subtract 147 from 153 to get 6.
Fetch the next digit (4) from the dividend, attach it to 6 and continue: 64 / 21

Going ahead to step 5:
The number 21 fits into 64 3 times, leaving a remainder of 1.
Write down 3 as next digit of the result. 
Result so far: 2273.0
If we subtract 63 from 64, we get 1.
Take the next digit (4) from the dividend and append it to 1, then repeat: 14 / 21

Going ahead to step 6:
21 goes into 14 0 times with a remainder of 14.
The next digit of our result is 0. 
Result so far: 22730.0
If we take 0 away from 14, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Step 7:
When dividing 140 by 21, we get 6 with a remainder of 14.
The next digit of our result is 6. 
Result so far: 22730.6
If we take 126 away from 140, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

Moving on to step 8:
The number 21 fits into 140 6 times, leaving a remainder of 14.
Put 6 as the next digit of the answer. 
Result so far: 22730.66
The remainder is 14 after subtracting 126 from 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

The quotient of the division is 22730.66, and the remainder is 0.014.