We're dividing 354625 by 84 
The aim is to understand the frequency of 84 in 354625.

Going ahead to step 1:
If we divide 3 by 84, we get 0 and a remainder of 3.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 3, we get 3.
Append the next digit (5) from the dividend to 3 and continue with: 35 / 84

Advancing to step 2:
The number 84 fits into 35 0 times, leaving a remainder of 35.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 35 to get 35.
Fetch the next digit (4) from the dividend, attach it to 35 and continue: 354 / 84

Step 3:
84 can be fit into 354 4 times, resulting in a remainder of 18.
The next digit of our result is 4. 
Result so far: 4.0
Subtracting 336 from 354 leaves us with 18.
Take the next digit (6) from the dividend and append it to 18, then repeat: 186 / 84

Advancing to step 4:
84 can be fit into 186 2 times, resulting in a remainder of 18.
The number 2 becomes the next digit in our result. 
Result so far: 42.0
Deduct 168 from 186 and we're left with 18.
Include the next digit (2) from the dividend after 18, then repeat: 182 / 84

Going ahead to step 5:
84 goes into 182 2 times with a remainder of 14.
Record the quotient 2 as the next digit in the result. 
Result so far: 422.0
Subtracting 168 from 182 leaves us with 14.
Fetch the next digit (5) from the dividend, attach it to 14 and continue: 145 / 84

Let's proceed to step 6:
If we divide 145 by 84, we get 1 and a remainder of 61.
The number 1 becomes the next digit in our result. 
Result so far: 4221.0
Subtracting 84 from 145 leaves us with 61.
Since there are no more digits in the dividend, we add a zero to the remainder making it 610, and continue the process.

Moving on to step 7:
84 goes into 610 7 times with a remainder of 22.
The number 7 becomes the next digit in our result. 
Result so far: 4221.7
Subtracting 588 from 610 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

On to step 8:
220 divided by 84 is 2 with a remainder of 52.
Put 2 as the next digit of the answer. 
Result so far: 4221.72
If we subtract 168 from 220, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 9:
84 can be fit into 520 6 times, resulting in a remainder of 16.
The number 6 becomes the next digit in our result. 
Result so far: 4221.726
If we take 504 away from 520, we end up with 16.
Since there are no more digits in the dividend, we add a zero to the remainder making it 160, and continue the process.

Step 10:
The number 84 fits into 160 1 times, leaving a remainder of 76.
Put 1 as the next digit of the answer. 
Result so far: 4221.7261
If we take 84 away from 160, we end up with 76.
Since there are no more digits in the dividend, we add a zero to the remainder making it 760, and continue the process.

Step 11:
760 divided by 84 is 9 with a remainder of 4.
The number 9 becomes the next digit in our result. 
Result so far: 4221.72619
If we take 756 away from 760, we end up with 4.
Since there are no more digits in the dividend, we add a zero to the remainder making it 40, and continue the process.

Moving on to step 12:
When dividing 40 by 84, we get 0 with a remainder of 40.
Record the quotient 0 as the next digit in the result. 
Result so far: 4221.72619
If we take 0 away from 40, we end up with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

Going ahead to step 13:
The number 84 fits into 400 4 times, leaving a remainder of 64.
Put 4 as the next digit of the answer. 
Result so far: 4221.7261904
Subtract 336 from 400 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

On to step 14:
The number 84 fits into 640 7 times, leaving a remainder of 52.
Use 7 as the next digit of our solution. 
Result so far: 4221.72619047
Subtracting 588 from 640 leaves us with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

The final outcome is 4221.72619047, with a leftover of 5.2e-08.