We divide 51537960 by 666
The aim is to understand the frequency of 666 in 51537960.

Let's proceed to step 1:
The number 666 fits into 5 0 times, leaving a remainder of 5.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtract 0 from 5 to get 5.
Append the next digit (1) from the dividend to 5 and continue with: 51 / 666

Going ahead to step 2:
666 goes into 51 0 times 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.
Append the next digit (5) from the dividend to 51 and continue with: 515 / 666

Step 3:
When dividing 515 by 666, we get 0 with a remainder of 515.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 515 leaves us with 515.
Bring next digit (3) of the dividend behind the 515 and repeat the process: 5153 / 666

Step 4:
When dividing 5153 by 666, we get 7 with a remainder of 491.
Write down 7 as next digit of the result. 
Result so far: 7.0
The remainder is 491 after subtracting 4662 from 5153.
Fetch the next digit (7) from the dividend, attach it to 491 and continue: 4917 / 666

Going ahead to step 5:
4917 divided by 666 is 7 with a remainder of 255.
The number 7 becomes the next digit in our result. 
Result so far: 77.0
Subtracting 4662 from 4917 leaves us with 255.
Append the next digit (9) from the dividend to 255 and continue with: 2559 / 666

Moving on to step 6:
The number 666 fits into 2559 3 times, leaving a remainder of 561.
Use 3 as the next digit of our solution. 
Result so far: 773.0
Subtract 1998 from 2559 to get 561.
Take the next digit (6) from the dividend and append it to 561, then repeat: 5616 / 666

On to step 7:
5616 divided by 666 is 8 with a remainder of 288.
The next digit of our result is 8. 
Result so far: 7738.0
Subtract 5328 from 5616 to get 288.
Grab the next digit (0) from the dividend, add it to 288, then carry on: 2880 / 666

Going ahead to step 8:
666 goes into 2880 4 times with a remainder of 216.
Write down 4 as next digit of the result. 
Result so far: 77384.0
Deduct 2664 from 2880 and we're left with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Advancing to step 9:
When dividing 2160 by 666, we get 3 with a remainder of 162.
The next digit of our result is 3. 
Result so far: 77384.3
Subtracting 1998 from 2160 leaves us with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Step 10:
666 can be fit into 1620 2 times, resulting in a remainder of 288.
Record the quotient 2 as the next digit in the result. 
Result so far: 77384.32
Subtract 1332 from 1620 to get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Step 11:
If we divide 2880 by 666, we get 4 and a remainder of 216.
Record the quotient 4 as the next digit in the result. 
Result so far: 77384.324
Subtracting 2664 from 2880 leaves us with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Going ahead to step 12:
666 goes into 2160 3 times with a remainder of 162.
The number 3 becomes the next digit in our result. 
Result so far: 77384.3243
The remainder is 162 after subtracting 1998 from 2160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Let's proceed to step 13:
If we divide 1620 by 666, we get 2 and a remainder of 288.
Use 2 as the next digit of our solution. 
Result so far: 77384.32432
Subtract 1332 from 1620 to get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Going ahead to step 14:
When dividing 2880 by 666, we get 4 with a remainder of 216.
Put 4 as the next digit of the answer. 
Result so far: 77384.324324
If we take 2664 away from 2880, we end up with 216.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2160, and continue the process.

Let's proceed to step 15:
The number 666 fits into 2160 3 times, leaving a remainder of 162.
The number 3 becomes the next digit in our result. 
Result so far: 77384.3243243
If we take 1998 away from 2160, we end up with 162.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1620, and continue the process.

Advancing to step 16:
If we divide 1620 by 666, we get 2 and a remainder of 288.
Use 2 as the next digit of our solution. 
Result so far: 77384.32432432
If we subtract 1332 from 1620, we get 288.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2880, and continue the process.

Our division results in 77384.32432432 with a remaining 2.88e-07.