Let's divide 162421 by 84
The aim is to understand the frequency of 84 in 162421.

On to step 1:
84 goes into 1 0 times with a remainder of 1.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 1 to get 1.
Take the next digit (6) from the dividend and append it to 1, then repeat: 16 / 84

Moving on to step 2:
If we divide 16 by 84, we get 0 and a remainder of 16.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we take 0 away from 16, we end up with 16.
Append the next digit (2) from the dividend to 16 and continue with: 162 / 84

Going ahead to step 3:
If we divide 162 by 84, we get 1 and a remainder of 78.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
If we take 84 away from 162, we end up with 78.
Take the next digit (4) from the dividend and append it to 78, then repeat: 784 / 84

Advancing to step 4:
The number 84 fits into 784 9 times, leaving a remainder of 28.
The number 9 becomes the next digit in our result. 
Result so far: 19.0
Deduct 756 from 784 and we're left with 28.
Append the next digit (2) from the dividend to 28 and continue with: 282 / 84

Going ahead to step 5:
If we divide 282 by 84, we get 3 and a remainder of 30.
Use 3 as the next digit of our solution. 
Result so far: 193.0
Subtracting 252 from 282 leaves us with 30.
Fetch the next digit (1) from the dividend, attach it to 30 and continue: 301 / 84

Going ahead to step 6:
If we divide 301 by 84, we get 3 and a remainder of 49.
The next digit of our result is 3. 
Result so far: 1933.0
Subtract 252 from 301 to get 49.
Since there are no more digits in the dividend, we add a zero to the remainder making it 490, and continue the process.

Let's proceed to step 7:
490 divided by 84 is 5 with a remainder of 70.
The next digit of our result is 5. 
Result so far: 1933.5
Subtract 420 from 490 to get 70.
Since there are no more digits in the dividend, we add a zero to the remainder making it 700, and continue the process.

On to step 8:
If we divide 700 by 84, we get 8 and a remainder of 28.
Put 8 as the next digit of the answer. 
Result so far: 1933.58
Subtract 672 from 700 to get 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

On to step 9:
The number 84 fits into 280 3 times, leaving a remainder of 28.
Use 3 as the next digit of our solution. 
Result so far: 1933.583
If we take 252 away from 280, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

Moving on to step 10:
When dividing 280 by 84, we get 3 with a remainder of 28.
Record the quotient 3 as the next digit in the result. 
Result so far: 1933.5833
If we take 252 away from 280, we end up with 28.
Since there are no more digits in the dividend, we add a zero to the remainder making it 280, and continue the process.

The quotient of the division is 1933.5833, and the remainder is 0.00028.