Let's divide 51388223 by 66
The aim is to understand the frequency of 66 in 51388223.

Let's proceed to step 1:
The number 66 fits into 5 0 times, leaving a remainder of 5.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Fetch the next digit (1) from the dividend, attach it to 5 and continue: 51 / 66

Moving on to step 2:
When dividing 51 by 66, we get 0 with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Fetch the next digit (3) from the dividend, attach it to 51 and continue: 513 / 66

Going ahead to step 3:
66 goes into 513 7 times with a remainder of 51.
The next digit of our result is 7. 
Result so far: 7.0
If we subtract 462 from 513, we get 51.
Append the next digit (8) from the dividend to 51 and continue with: 518 / 66

Step 4:
66 can be fit into 518 7 times, resulting in a remainder of 56.
Record the quotient 7 as the next digit in the result. 
Result so far: 77.0
If we take 462 away from 518, we end up with 56.
Bring next digit (8) of the dividend behind the 56 and repeat the process: 568 / 66

Let's proceed to step 5:
The number 66 fits into 568 8 times, leaving a remainder of 40.
Record the quotient 8 as the next digit in the result. 
Result so far: 778.0
The remainder is 40 after subtracting 528 from 568.
Grab the next digit (2) from the dividend, add it to 40, then carry on: 402 / 66

Moving on to step 6:
The number 66 fits into 402 6 times, leaving a remainder of 6.
Record the quotient 6 as the next digit in the result. 
Result so far: 7786.0
If we take 396 away from 402, we end up with 6.
Grab the next digit (2) from the dividend, add it to 6, then carry on: 62 / 66

Let's proceed to step 7:
The number 66 fits into 62 0 times, leaving a remainder of 62.
The number 0 becomes the next digit in our result. 
Result so far: 77860.0
Deduct 0 from 62 and we're left with 62.
Grab the next digit (3) from the dividend, add it to 62, then carry on: 623 / 66

Going ahead to step 8:
When dividing 623 by 66, we get 9 with a remainder of 29.
Use 9 as the next digit of our solution. 
Result so far: 778609.0
If we take 594 away from 623, we end up with 29.
Since there are no more digits in the dividend, we add a zero to the remainder making it 290, and continue the process.

Step 9:
66 can be fit into 290 4 times, resulting in a remainder of 26.
Use 4 as the next digit of our solution. 
Result so far: 778609.4
If we take 264 away from 290, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

On to step 10:
When dividing 260 by 66, we get 3 with a remainder of 62.
Put 3 as the next digit of the answer. 
Result so far: 778609.43
The remainder is 62 after subtracting 198 from 260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Going ahead to step 11:
66 goes into 620 9 times with a remainder of 26.
Write down 9 as next digit of the result. 
Result so far: 778609.439
The remainder is 26 after subtracting 594 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Advancing to step 12:
When dividing 260 by 66, we get 3 with a remainder of 62.
Put 3 as the next digit of the answer. 
Result so far: 778609.4393
Subtracting 198 from 260 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Let's proceed to step 13:
The number 66 fits into 620 9 times, leaving a remainder of 26.
The next digit of our result is 9. 
Result so far: 778609.43939
If we take 594 away from 620, we end up with 26.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Moving on to step 14:
If we divide 260 by 66, we get 3 and a remainder of 62.
The number 3 becomes the next digit in our result. 
Result so far: 778609.439393
Subtracting 198 from 260 leaves us with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

On to step 15:
The number 66 fits into 620 9 times, leaving a remainder of 26.
The next digit of our result is 9. 
Result so far: 778609.4393939
The remainder is 26 after subtracting 594 from 620.
Since there are no more digits in the dividend, we add a zero to the remainder making it 260, and continue the process.

Going ahead to step 16:
The number 66 fits into 260 3 times, leaving a remainder of 62.
The number 3 becomes the next digit in our result. 
Result so far: 778609.43939393
If we subtract 198 from 260, we get 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

After the division, we end up with 778609.43939393 and a remainder of 6.2e-08.