915555 divided by 42 
The aim is to understand the frequency of 42 in 915555.

Let's proceed to step 1:
9 divided by 42 is 0 with a remainder of 9.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 9, we get 9.
Bring next digit (1) of the dividend behind the 9 and repeat the process: 91 / 42

On to step 2:
If we divide 91 by 42, we get 2 and a remainder of 7.
Record the quotient 2 as the next digit in the result. 
Result so far: 2.0
Subtracting 84 from 91 leaves us with 7.
Include the next digit (5) from the dividend after 7, then repeat: 75 / 42

On to step 3:
The number 42 fits into 75 1 times, leaving a remainder of 33.
Put 1 as the next digit of the answer. 
Result so far: 21.0
Deduct 42 from 75 and we're left with 33.
Include the next digit (5) from the dividend after 33, then repeat: 335 / 42

Advancing to step 4:
When dividing 335 by 42, we get 7 with a remainder of 41.
Record the quotient 7 as the next digit in the result. 
Result so far: 217.0
The remainder is 41 after subtracting 294 from 335.
Fetch the next digit (5) from the dividend, attach it to 41 and continue: 415 / 42

Step 5:
42 goes into 415 9 times with a remainder of 37.
Put 9 as the next digit of the answer. 
Result so far: 2179.0
Subtracting 378 from 415 leaves us with 37.
Include the next digit (5) from the dividend after 37, then repeat: 375 / 42

On to step 6:
42 can be fit into 375 8 times, resulting in a remainder of 39.
Write down 8 as next digit of the result. 
Result so far: 21798.0
If we take 336 away from 375, we end up with 39.
Since there are no more digits in the dividend, we add a zero to the remainder making it 390, and continue the process.

On to step 7:
When dividing 390 by 42, we get 9 with a remainder of 12.
Record the quotient 9 as the next digit in the result. 
Result so far: 21798.9
If we take 378 away from 390, we end up with 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 8:
When dividing 120 by 42, we get 2 with a remainder of 36.
Record the quotient 2 as the next digit in the result. 
Result so far: 21798.92
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.

On to step 9:
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: 21798.928
Deduct 336 from 360 and we're left 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.

Moving on to step 10:
42 can be fit into 240 5 times, resulting in a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 21798.9285
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.

Going ahead to step 11:
42 goes into 300 7 times with a remainder of 6.
Record the quotient 7 as the next digit in the result. 
Result so far: 21798.92857
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.

On to step 12:
60 divided by 42 is 1 with a remainder of 18.
The number 1 becomes the next digit in our result. 
Result so far: 21798.928571
If we take 42 away from 60, we end up with 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 13:
When dividing 180 by 42, we get 4 with a remainder of 12.
Record the quotient 4 as the next digit in the result. 
Result so far: 21798.9285714
Deduct 168 from 180 and we're left with 12.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Going ahead to step 14:
The number 42 fits into 120 2 times, leaving a remainder of 36.
Use 2 as the next digit of our solution. 
Result so far: 21798.92857142
If we subtract 84 from 120, we get 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

The quotient of the division is 21798.92857142, and the remainder is 3.6e-08.