We divide 50148977 by 660
The aim is to understand the frequency of 660 in 50148977.

Going ahead to step 1:
If we divide 5 by 660, we get 0 and a remainder of 5.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Deduct 0 from 5 and we're left with 5.
Grab the next digit (0) from the dividend, add it to 5, then carry on: 50 / 660

Moving on to step 2:
When dividing 50 by 660, we get 0 with a remainder of 50.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtracting 0 from 50 leaves us with 50.
Bring next digit (1) of the dividend behind the 50 and repeat the process: 501 / 660

Advancing to step 3:
When dividing 501 by 660, we get 0 with a remainder of 501.
The next digit of our result is 0. 
Result so far: 0.0
Deduct 0 from 501 and we're left with 501.
Take the next digit (4) from the dividend and append it to 501, then repeat: 5014 / 660

On to step 4:
If we divide 5014 by 660, we get 7 and a remainder of 394.
Use 7 as the next digit of our solution. 
Result so far: 7.0
If we subtract 4620 from 5014, we get 394.
Bring next digit (8) of the dividend behind the 394 and repeat the process: 3948 / 660

Step 5:
660 goes into 3948 5 times with a remainder of 648.
Put 5 as the next digit of the answer. 
Result so far: 75.0
If we take 3300 away from 3948, we end up with 648.
Take the next digit (9) from the dividend and append it to 648, then repeat: 6489 / 660

Going ahead to step 6:
If we divide 6489 by 660, we get 9 and a remainder of 549.
Write down 9 as next digit of the result. 
Result so far: 759.0
If we take 5940 away from 6489, we end up with 549.
Fetch the next digit (7) from the dividend, attach it to 549 and continue: 5497 / 660

Step 7:
The number 660 fits into 5497 8 times, leaving a remainder of 217.
Write down 8 as next digit of the result. 
Result so far: 7598.0
Deduct 5280 from 5497 and we're left with 217.
Include the next digit (7) from the dividend after 217, then repeat: 2177 / 660

On to step 8:
660 goes into 2177 3 times with a remainder of 197.
Write down 3 as next digit of the result. 
Result so far: 75983.0
Deduct 1980 from 2177 and we're left with 197.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1970, and continue the process.

Going ahead to step 9:
1970 divided by 660 is 2 with a remainder of 650.
The next digit of our result is 2. 
Result so far: 75983.2
If we take 1320 away from 1970, we end up with 650.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6500, and continue the process.

Going ahead to step 10:
660 goes into 6500 9 times with a remainder of 560.
The next digit of our result is 9. 
Result so far: 75983.29
If we subtract 5940 from 6500, we get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

Step 11:
If we divide 5600 by 660, we get 8 and a remainder of 320.
Use 8 as the next digit of our solution. 
Result so far: 75983.298
If we take 5280 away from 5600, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Going ahead to step 12:
If we divide 3200 by 660, we get 4 and a remainder of 560.
Use 4 as the next digit of our solution. 
Result so far: 75983.2984
Subtract 2640 from 3200 to get 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

On to step 13:
660 goes into 5600 8 times with a remainder of 320.
Use 8 as the next digit of our solution. 
Result so far: 75983.29848
Deduct 5280 from 5600 and we're left with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 14:
660 goes into 3200 4 times with a remainder of 560.
Record the quotient 4 as the next digit in the result. 
Result so far: 75983.298484
Subtracting 2640 from 3200 leaves us with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

On to step 15:
660 goes into 5600 8 times with a remainder of 320.
Use 8 as the next digit of our solution. 
Result so far: 75983.2984848
If we take 5280 away from 5600, we end up with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Step 16:
The number 660 fits into 3200 4 times, leaving a remainder of 560.
The next digit of our result is 4. 
Result so far: 75983.29848484
If we take 2640 away from 3200, we end up with 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5600, and continue the process.

After the division, we end up with 75983.29848484 and a remainder of 5.6e-07.