We divide 781630 by 66
The aim is to understand the frequency of 66 in 781630.

Let's proceed to step 1:
If we divide 7 by 66, we get 0 and a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 66

Advancing to step 2:
66 can be fit into 78 1 times, resulting in a remainder of 12.
Write down 1 as next digit of the result. 
Result so far: 1.0
The remainder is 12 after subtracting 66 from 78.
Take the next digit (1) from the dividend and append it to 12, then repeat: 121 / 66

Let's proceed to step 3:
121 divided by 66 is 1 with a remainder of 55.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
Subtract 66 from 121 to get 55.
Grab the next digit (6) from the dividend, add it to 55, then carry on: 556 / 66

Going ahead to step 4:
556 divided by 66 is 8 with a remainder of 28.
Record the quotient 8 as the next digit in the result. 
Result so far: 118.0
If we take 528 away from 556, we end up with 28.
Grab the next digit (3) from the dividend, add it to 28, then carry on: 283 / 66

Moving on to step 5:
66 goes into 283 4 times with a remainder of 19.
Record the quotient 4 as the next digit in the result. 
Result so far: 1184.0
Subtracting 264 from 283 leaves us with 19.
Append the next digit (0) from the dividend to 19 and continue with: 190 / 66

On to step 6:
190 divided by 66 is 2 with a remainder of 58.
The number 2 becomes the next digit in our result. 
Result so far: 11842.0
The remainder is 58 after subtracting 132 from 190.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Advancing to step 7:
If we divide 580 by 66, we get 8 and a remainder of 52.
The next digit of our result is 8. 
Result so far: 11842.8
The remainder is 52 after subtracting 528 from 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 8:
66 can be fit into 520 7 times, resulting in a remainder of 58.
Put 7 as the next digit of the answer. 
Result so far: 11842.87
Subtract 462 from 520 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Let's proceed to step 9:
66 can be fit into 580 8 times, resulting in a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 11842.878
If we subtract 528 from 580, we get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Moving on to step 10:
The number 66 fits into 520 7 times, leaving a remainder of 58.
Put 7 as the next digit of the answer. 
Result so far: 11842.8787
If we subtract 462 from 520, we get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Step 11:
66 can be fit into 580 8 times, resulting in a remainder of 52.
Use 8 as the next digit of our solution. 
Result so far: 11842.87878
Subtract 528 from 580 to get 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 12:
If we divide 520 by 66, we get 7 and a remainder of 58.
Write down 7 as next digit of the result. 
Result so far: 11842.878787
Subtract 462 from 520 to get 58.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

Going ahead to step 13:
580 divided by 66 is 8 with a remainder of 52.
Put 8 as the next digit of the answer. 
Result so far: 11842.8787878
If we take 528 away from 580, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Step 14:
66 can be fit into 520 7 times, resulting in a remainder of 58.
Use 7 as the next digit of our solution. 
Result so far: 11842.87878787
The remainder is 58 after subtracting 462 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 580, and continue the process.

The final result is 11842.87878787 with a remainder of 5.8e-08.