We look at the division of 897738 by 66 
The aim is to understand the frequency of 66 in 897738.

Moving on to step 1:
When dividing 8 by 66, we get 0 with a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Grab the next digit (9) from the dividend, add it to 8, then carry on: 89 / 66

On to step 2:
66 goes into 89 1 times with a remainder of 23.
Record the quotient 1 as the next digit in the result. 
Result so far: 1.0
Subtracting 66 from 89 leaves us with 23.
Fetch the next digit (7) from the dividend, attach it to 23 and continue: 237 / 66

Moving on to step 3:
If we divide 237 by 66, we get 3 and a remainder of 39.
Write down 3 as next digit of the result. 
Result so far: 13.0
Deduct 198 from 237 and we're left with 39.
Grab the next digit (7) from the dividend, add it to 39, then carry on: 397 / 66

On to step 4:
The number 66 fits into 397 6 times, leaving a remainder of 1.
Use 6 as the next digit of our solution. 
Result so far: 136.0
If we take 396 away from 397, we end up with 1.
Fetch the next digit (3) from the dividend, attach it to 1 and continue: 13 / 66

Going ahead to step 5:
66 goes into 13 0 times with a remainder of 13.
Put 0 as the next digit of the answer. 
Result so far: 1360.0
If we take 0 away from 13, we end up with 13.
Include the next digit (8) from the dividend after 13, then repeat: 138 / 66

Going ahead to step 6:
When dividing 138 by 66, we get 2 with a remainder of 6.
The number 2 becomes the next digit in our result. 
Result so far: 13602.0
If we subtract 132 from 138, we 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.

Going ahead to step 7:
66 can be fit into 60 0 times, resulting in a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 13602.0
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 8:
If we divide 600 by 66, we get 9 and a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 13602.09
Deduct 594 from 600 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.

Going ahead to step 9:
66 can be fit into 60 0 times, resulting in a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 13602.09
The remainder is 60 after subtracting 0 from 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Advancing to step 10:
66 goes into 600 9 times with a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 13602.0909
If we take 594 away from 600, we end up 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 11:
66 goes into 60 0 times with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 13602.0909
Subtract 0 from 60 to get 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Step 12:
If we divide 600 by 66, we get 9 and a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 13602.090909
If we subtract 594 from 600, we 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.

Moving on to step 13:
66 can be fit into 60 0 times, resulting in a remainder of 60.
The next digit of our result is 0. 
Result so far: 13602.090909
Deduct 0 from 60 and we're left with 60.
Since there are no more digits in the dividend, we add a zero to the remainder making it 600, and continue the process.

Moving on to step 14:
The number 66 fits into 600 9 times, leaving a remainder of 6.
Write down 9 as next digit of the result. 
Result so far: 13602.09090909
If we subtract 594 from 600, we 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.

The quotient of the division is 13602.09090909, and the remainder is 6e-09.