We divide 78338319 by 66
The aim is to understand the frequency of 66 in 78338319.

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

Advancing to step 2:
If we divide 78 by 66, we get 1 and a remainder of 12.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
Subtract 66 from 78 to get 12.
Take the next digit (3) from the dividend and append it to 12, then repeat: 123 / 66

Going ahead to step 3:
When dividing 123 by 66, we get 1 with a remainder of 57.
Use 1 as the next digit of our solution. 
Result so far: 11.0
If we take 66 away from 123, we end up with 57.
Include the next digit (3) from the dividend after 57, then repeat: 573 / 66

Step 4:
If we divide 573 by 66, we get 8 and a remainder of 45.
Use 8 as the next digit of our solution. 
Result so far: 118.0
Deduct 528 from 573 and we're left with 45.
Grab the next digit (8) from the dividend, add it to 45, then carry on: 458 / 66

Step 5:
If we divide 458 by 66, we get 6 and a remainder of 62.
Write down 6 as next digit of the result. 
Result so far: 1186.0
Deduct 396 from 458 and we're left with 62.
Bring next digit (3) of the dividend behind the 62 and repeat the process: 623 / 66

Moving on to step 6:
When dividing 623 by 66, we get 9 with a remainder of 29.
The next digit of our result is 9. 
Result so far: 11869.0
Subtract 594 from 623 to get 29.
Append the next digit (1) from the dividend to 29 and continue with: 291 / 66

Moving on to step 7:
If we divide 291 by 66, we get 4 and a remainder of 27.
Write down 4 as next digit of the result. 
Result so far: 118694.0
Subtract 264 from 291 to get 27.
Take the next digit (9) from the dividend and append it to 27, then repeat: 279 / 66

On to step 8:
If we divide 279 by 66, we get 4 and a remainder of 15.
Put 4 as the next digit of the answer. 
Result so far: 1186944.0
If we take 264 away from 279, we end up with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Going ahead to step 9:
When dividing 150 by 66, we get 2 with a remainder of 18.
Write down 2 as next digit of the result. 
Result so far: 1186944.2
The remainder is 18 after subtracting 132 from 150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

On to step 10:
180 divided by 66 is 2 with a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 1186944.22
The remainder is 48 after subtracting 132 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

In conclusion, the division gives 1186944.22 with a balance of 0.048.