We look at the division of 21492 by 67 
The aim is to understand the frequency of 67 in 21492.

On to step 1:
If we divide 2 by 67, we get 0 and a remainder of 2.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 2 leaves us with 2.
Append the next digit (1) from the dividend to 2 and continue with: 21 / 67

Step 2:
When dividing 21 by 67, we get 0 with a remainder of 21.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 21 to get 21.
Include the next digit (4) from the dividend after 21, then repeat: 214 / 67

Advancing to step 3:
If we divide 214 by 67, we get 3 and a remainder of 13.
The number 3 becomes the next digit in our result. 
Result so far: 3.0
If we take 201 away from 214, we end up with 13.
Fetch the next digit (9) from the dividend, attach it to 13 and continue: 139 / 67

Moving on to step 4:
67 goes into 139 2 times with a remainder of 5.
The next digit of our result is 2. 
Result so far: 32.0
Deduct 134 from 139 and we're left with 5.
Append the next digit (2) from the dividend to 5 and continue with: 52 / 67

Going ahead to step 5:
67 can be fit into 52 0 times, resulting in a remainder of 52.
The number 0 becomes the next digit in our result. 
Result so far: 320.0
Deduct 0 from 52 and we're left 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.

Step 6:
When dividing 520 by 67, we get 7 with a remainder of 51.
Record the quotient 7 as the next digit in the result. 
Result so far: 320.7
Deduct 469 from 520 and we're left with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Advancing to step 7:
When dividing 510 by 67, we get 7 with a remainder of 41.
Write down 7 as next digit of the result. 
Result so far: 320.77
Subtract 469 from 510 to get 41.
Since there are no more digits in the dividend, we add a zero to the remainder making it 410, and continue the process.

After the division, we end up with 320.77 and a remainder of 0.041.