642342 divided by 66 
The aim is to understand the frequency of 66 in 642342.

Going ahead to step 1:
If we divide 6 by 66, we get 0 and a remainder of 6.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 6 to get 6.
Grab the next digit (4) from the dividend, add it to 6, then carry on: 64 / 66

On to step 2:
64 divided by 66 is 0 with a remainder of 64.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 64, we end up with 64.
Include the next digit (2) from the dividend after 64, then repeat: 642 / 66

Moving on to step 3:
642 divided by 66 is 9 with a remainder of 48.
Record the quotient 9 as the next digit in the result. 
Result so far: 9.0
If we take 594 away from 642, we end up with 48.
Grab the next digit (3) from the dividend, add it to 48, then carry on: 483 / 66

Step 4:
If we divide 483 by 66, we get 7 and a remainder of 21.
Record the quotient 7 as the next digit in the result. 
Result so far: 97.0
If we take 462 away from 483, we end up with 21.
Grab the next digit (4) from the dividend, add it to 21, then carry on: 214 / 66

On to step 5:
The number 66 fits into 214 3 times, leaving a remainder of 16.
Put 3 as the next digit of the answer. 
Result so far: 973.0
If we subtract 198 from 214, we get 16.
Fetch the next digit (2) from the dividend, attach it to 16 and continue: 162 / 66

Going ahead to step 6:
66 goes into 162 2 times with a remainder of 30.
The number 2 becomes the next digit in our result. 
Result so far: 9732.0
Subtracting 132 from 162 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 7:
When dividing 300 by 66, we get 4 with a remainder of 36.
The number 4 becomes the next digit in our result. 
Result so far: 9732.4
Subtract 264 from 300 to 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.

Let's proceed to step 8:
If we divide 360 by 66, we get 5 and a remainder of 30.
The number 5 becomes the next digit in our result. 
Result so far: 9732.45
Subtract 330 from 360 to get 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 9:
300 divided by 66 is 4 with a remainder of 36.
Write down 4 as next digit of the result. 
Result so far: 9732.454
If we subtract 264 from 300, 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.

Step 10:
66 goes into 360 5 times with a remainder of 30.
Put 5 as the next digit of the answer. 
Result so far: 9732.4545
Subtract 330 from 360 to get 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 11:
If we divide 300 by 66, we get 4 and a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 9732.45454
Deduct 264 from 300 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.

Going ahead to step 12:
If we divide 360 by 66, we get 5 and a remainder of 30.
Use 5 as the next digit of our solution. 
Result so far: 9732.454545
Deduct 330 from 360 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.

On to step 13:
The number 66 fits into 300 4 times, leaving a remainder of 36.
Put 4 as the next digit of the answer. 
Result so far: 9732.4545454
Deduct 264 from 300 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.

Going ahead to step 14:
The number 66 fits into 360 5 times, leaving a remainder of 30.
Write down 5 as next digit of the result. 
Result so far: 9732.45454545
If we subtract 330 from 360, we get 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 quotient of the division is 9732.45454545, and the remainder is 3e-08.