Let's divide 725412 by 66
The aim is to understand the frequency of 66 in 725412.

Let's proceed to step 1:
7 divided by 66 is 0 with a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Grab the next digit (2) from the dividend, add it to 7, then carry on: 72 / 66

Let's proceed to step 2:
66 can be fit into 72 1 times, resulting in a remainder of 6.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 66 from 72, we get 6.
Take the next digit (5) from the dividend and append it to 6, then repeat: 65 / 66

Advancing to step 3:
66 can be fit into 65 0 times, resulting in a remainder of 65.
The next digit of our result is 0. 
Result so far: 10.0
The remainder is 65 after subtracting 0 from 65.
Bring next digit (4) of the dividend behind the 65 and repeat the process: 654 / 66

On to step 4:
The number 66 fits into 654 9 times, leaving a remainder of 60.
The number 9 becomes the next digit in our result. 
Result so far: 109.0
If we subtract 594 from 654, we get 60.
Append the next digit (1) from the dividend to 60 and continue with: 601 / 66

Let's proceed to step 5:
601 divided by 66 is 9 with a remainder of 7.
The number 9 becomes the next digit in our result. 
Result so far: 1099.0
Subtract 594 from 601 to get 7.
Fetch the next digit (2) from the dividend, attach it to 7 and continue: 72 / 66

Step 6:
72 divided by 66 is 1 with a remainder of 6.
The number 1 becomes the next digit in our result. 
Result so far: 10991.0
Subtracting 66 from 72 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.

Step 7:
66 goes into 60 0 times with a remainder of 60.
Write down 0 as next digit of the result. 
Result so far: 10991.0
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.

Moving on to step 8:
When dividing 600 by 66, we get 9 with a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 10991.09
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.

Going ahead to step 9:
If we divide 60 by 66, we get 0 and a remainder of 60.
Use 0 as the next digit of our solution. 
Result so far: 10991.09
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.

Let's proceed to step 10:
66 can be fit into 600 9 times, resulting in a remainder of 6.
Put 9 as the next digit of the answer. 
Result so far: 10991.0909
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.

Step 11:
When dividing 60 by 66, we get 0 with a remainder of 60.
The number 0 becomes the next digit in our result. 
Result so far: 10991.0909
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.

Moving on to 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: 10991.090909
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 goes into 60 0 times with a remainder of 60.
Put 0 as the next digit of the answer. 
Result so far: 10991.090909
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.

Step 14:
600 divided by 66 is 9 with a remainder of 6.
Record the quotient 9 as the next digit in the result. 
Result so far: 10991.09090909
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.

After the division, we end up with 10991.09090909 and a remainder of 6e-09.