We look at the division of 4196025 by 42 
The aim is to understand the frequency of 42 in 4196025.

Going ahead to step 1:
If we divide 4 by 42, we get 0 and a remainder of 4.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 4, we get 4.
Append the next digit (1) from the dividend to 4 and continue with: 41 / 42

Moving on to step 2:
When dividing 41 by 42, we get 0 with a remainder of 41.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 41 leaves us with 41.
Take the next digit (9) from the dividend and append it to 41, then repeat: 419 / 42

Advancing to step 3:
If we divide 419 by 42, we get 9 and a remainder of 41.
The next digit of our result is 9. 
Result so far: 9.0
If we take 378 away from 419, we end up with 41.
Grab the next digit (6) from the dividend, add it to 41, then carry on: 416 / 42

Step 4:
If we divide 416 by 42, we get 9 and a remainder of 38.
Use 9 as the next digit of our solution. 
Result so far: 99.0
Subtracting 378 from 416 leaves us with 38.
Fetch the next digit (0) from the dividend, attach it to 38 and continue: 380 / 42

Step 5:
380 divided by 42 is 9 with a remainder of 2.
Use 9 as the next digit of our solution. 
Result so far: 999.0
If we subtract 378 from 380, we get 2.
Fetch the next digit (2) from the dividend, attach it to 2 and continue: 22 / 42

Moving on to step 6:
If we divide 22 by 42, we get 0 and a remainder of 22.
The number 0 becomes the next digit in our result. 
Result so far: 9990.0
Deduct 0 from 22 and we're left with 22.
Take the next digit (5) from the dividend and append it to 22, then repeat: 225 / 42

Advancing to step 7:
42 goes into 225 5 times with a remainder of 15.
The number 5 becomes the next digit in our result. 
Result so far: 99905.0
Subtract 210 from 225 to get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Step 8:
The number 42 fits into 150 3 times, leaving a remainder of 24.
Put 3 as the next digit of the answer. 
Result so far: 99905.3
Subtract 126 from 150 to get 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Moving on to step 9:
240 divided by 42 is 5 with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 99905.35
Subtracting 210 from 240 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Let's proceed to step 10:
When dividing 300 by 42, we get 7 with a remainder of 6.
Put 7 as the next digit of the answer. 
Result so far: 99905.357
Subtract 294 from 300 to get 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Advancing to step 11:
42 can be fit into 60 1 times, resulting in a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 99905.3571
Subtract 42 from 60 to get 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Moving on to step 12:
180 divided by 42 is 4 with a remainder of 12.
The number 4 becomes the next digit in our result. 
Result so far: 99905.35714
If we subtract 168 from 180, we get 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Let's proceed to step 13:
42 can be fit into 120 2 times, resulting in a remainder of 36.
Use 2 as the next digit of our solution. 
Result so far: 99905.357142
Subtracting 84 from 120 leaves us with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Moving on to step 14:
42 goes into 360 8 times with a remainder of 24.
Record the quotient 8 as the next digit in the result. 
Result so far: 99905.3571428
The remainder is 24 after subtracting 336 from 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

Step 15:
42 can be fit into 240 5 times, resulting in a remainder of 30.
The next digit of our result is 5. 
Result so far: 99905.35714285
Subtracting 210 from 240 leaves us with 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

The final outcome is 99905.35714285, with a leftover of 3e-08.