We're dividing 661113 by 42 
The aim is to understand the frequency of 42 in 661113.

On to step 1:
If we divide 6 by 42, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (6) from the dividend after 6, then repeat: 66 / 42

Going ahead to step 2:
If we divide 66 by 42, we get 1 and a remainder of 24.
The next digit of our result is 1. 
Result so far: 1.0
If we take 42 away from 66, we end up with 24.
Grab the next digit (1) from the dividend, add it to 24, then carry on: 241 / 42

On to step 3:
If we divide 241 by 42, we get 5 and a remainder of 31.
Put 5 as the next digit of the answer. 
Result so far: 15.0
Deduct 210 from 241 and we're left with 31.
Include the next digit (1) from the dividend after 31, then repeat: 311 / 42

Going ahead to step 4:
42 can be fit into 311 7 times, resulting in a remainder of 17.
Write down 7 as next digit of the result. 
Result so far: 157.0
Subtract 294 from 311 to get 17.
Grab the next digit (1) from the dividend, add it to 17, then carry on: 171 / 42

Moving on to step 5:
When dividing 171 by 42, we get 4 with a remainder of 3.
Write down 4 as next digit of the result. 
Result so far: 1574.0
Subtract 168 from 171 to get 3.
Take the next digit (3) from the dividend and append it to 3, then repeat: 33 / 42

Step 6:
If we divide 33 by 42, we get 0 and a remainder of 33.
Write down 0 as next digit of the result. 
Result so far: 15740.0
Subtract 0 from 33 to get 33.
Since there are no more digits in the dividend, we add a zero to the remainder making it 330, and continue the process.

Let's proceed to step 7:
When dividing 330 by 42, we get 7 with a remainder of 36.
The next digit of our result is 7. 
Result so far: 15740.7
The remainder is 36 after subtracting 294 from 330.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

Advancing to step 8:
When dividing 360 by 42, we get 8 with a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 15740.78
Subtract 336 from 360 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.

Step 9:
240 divided by 42 is 5 with a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 15740.785
Deduct 210 from 240 and we're left 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.

Step 10:
If we divide 300 by 42, we get 7 and a remainder of 6.
Use 7 as the next digit of our solution. 
Result so far: 15740.7857
Deduct 294 from 300 and we're left with 6.
Since there are no more digits in the dividend, we add a zero to the remainder making it 60, and continue the process.

Let's proceed to step 11:
42 goes into 60 1 times with a remainder of 18.
The next digit of our result is 1. 
Result so far: 15740.78571
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:
42 can be fit into 180 4 times, resulting in a remainder of 12.
The next digit of our result is 4. 
Result so far: 15740.785714
Subtract 168 from 180 to 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.
Record the quotient 2 as the next digit in the result. 
Result so far: 15740.7857142
Deduct 84 from 120 and we're left 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.

Step 14:
The number 42 fits into 360 8 times, leaving a remainder of 24.
The number 8 becomes the next digit in our result. 
Result so far: 15740.78571428
Subtracting 336 from 360 leaves us with 24.
Since there are no more digits in the dividend, we add a zero to the remainder making it 240, and continue the process.

The final outcome is 15740.78571428, with a leftover of 2.4e-08.