998739 ÷ 66 
The aim is to understand the frequency of 66 in 998739.

On to step 1:
66 can be fit into 9 0 times, resulting in a remainder of 9.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 9 after subtracting 0 from 9.
Take the next digit (9) from the dividend and append it to 9, then repeat: 99 / 66

Let's proceed to step 2:
66 goes into 99 1 times with a remainder of 33.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 66 from 99 and we're left with 33.
Append the next digit (8) from the dividend to 33 and continue with: 338 / 66

On to step 3:
66 can be fit into 338 5 times, resulting in a remainder of 8.
The number 5 becomes the next digit in our result. 
Result so far: 15.0
The remainder is 8 after subtracting 330 from 338.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 66

Let's proceed to step 4:
The number 66 fits into 87 1 times, leaving a remainder of 21.
Record the quotient 1 as the next digit in the result. 
Result so far: 151.0
If we subtract 66 from 87, we get 21.
Fetch the next digit (3) from the dividend, attach it to 21 and continue: 213 / 66

Going ahead to step 5:
The number 66 fits into 213 3 times, leaving a remainder of 15.
Use 3 as the next digit of our solution. 
Result so far: 1513.0
Deduct 198 from 213 and we're left with 15.
Take the next digit (9) from the dividend and append it to 15, then repeat: 159 / 66

Advancing to step 6:
159 divided by 66 is 2 with a remainder of 27.
Record the quotient 2 as the next digit in the result. 
Result so far: 15132.0
Subtracting 132 from 159 leaves us with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Let's proceed to step 7:
When dividing 270 by 66, we get 4 with a remainder of 6.
Write down 4 as next digit of the result. 
Result so far: 15132.4
Deduct 264 from 270 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 8:
If we divide 60 by 66, we get 0 and a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 15132.4
If we take 0 away from 60, we end up 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.

Going ahead to step 9:
66 goes into 600 9 times with a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 15132.409
The remainder is 6 after subtracting 594 from 600.
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 10:
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: 15132.409
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.

Step 11:
When dividing 600 by 66, we get 9 with a remainder of 6.
The number 9 becomes the next digit in our result. 
Result so far: 15132.40909
Subtracting 594 from 600 leaves us 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 12:
If we divide 60 by 66, we get 0 and a remainder of 60.
Record the quotient 0 as the next digit in the result. 
Result so far: 15132.40909
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.

Step 13:
66 can be fit into 600 9 times, resulting in a remainder of 6.
Use 9 as the next digit of our solution. 
Result so far: 15132.4090909
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 14:
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: 15132.4090909
Subtracting 0 from 60 leaves us 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.

After the division, we end up with 15132.4090909 and a remainder of 6e-08.