We divide 15190431 by 660
The aim is to understand the frequency of 660 in 15190431.

Step 1:
The number 660 fits into 1 0 times, leaving a remainder of 1.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 1 leaves us with 1.
Bring next digit (5) of the dividend behind the 1 and repeat the process: 15 / 660

Moving on to step 2:
15 divided by 660 is 0 with a remainder of 15.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 15 after subtracting 0 from 15.
Take the next digit (1) from the dividend and append it to 15, then repeat: 151 / 660

Going ahead to step 3:
151 divided by 660 is 0 with a remainder of 151.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 151 and we're left with 151.
Bring next digit (9) of the dividend behind the 151 and repeat the process: 1519 / 660

On to step 4:
660 goes into 1519 2 times with a remainder of 199.
Write down 2 as next digit of the result. 
Result so far: 2.0
Deduct 1320 from 1519 and we're left with 199.
Bring next digit (0) of the dividend behind the 199 and repeat the process: 1990 / 660

Let's proceed to step 5:
If we divide 1990 by 660, we get 3 and a remainder of 10.
The number 3 becomes the next digit in our result. 
Result so far: 23.0
If we take 1980 away from 1990, we end up with 10.
Bring next digit (4) of the dividend behind the 10 and repeat the process: 104 / 660

Step 6:
660 goes into 104 0 times with a remainder of 104.
Record the quotient 0 as the next digit in the result. 
Result so far: 230.0
Deduct 0 from 104 and we're left with 104.
Append the next digit (3) from the dividend to 104 and continue with: 1043 / 660

Going ahead to step 7:
660 goes into 1043 1 times with a remainder of 383.
Write down 1 as next digit of the result. 
Result so far: 2301.0
If we subtract 660 from 1043, we get 383.
Include the next digit (1) from the dividend after 383, then repeat: 3831 / 660

Advancing to step 8:
660 goes into 3831 5 times with a remainder of 531.
The next digit of our result is 5. 
Result so far: 23015.0
Deduct 3300 from 3831 and we're left with 531.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5310, and continue the process.

Advancing to step 9:
660 can be fit into 5310 8 times, resulting in a remainder of 30.
The number 8 becomes the next digit in our result. 
Result so far: 23015.8
If we subtract 5280 from 5310, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Moving on to step 10:
660 can be fit into 300 0 times, resulting in a remainder of 300.
Put 0 as the next digit of the answer. 
Result so far: 23015.8
Subtracting 0 from 300 leaves us with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Advancing to step 11:
3000 divided by 660 is 4 with a remainder of 360.
The next digit of our result is 4. 
Result so far: 23015.804
Subtracting 2640 from 3000 leaves us with 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Going ahead to step 12:
When dividing 3600 by 660, we get 5 with a remainder of 300.
Use 5 as the next digit of our solution. 
Result so far: 23015.8045
If we take 3300 away from 3600, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

Let's proceed to step 13:
3000 divided by 660 is 4 with a remainder of 360.
Put 4 as the next digit of the answer. 
Result so far: 23015.80454
The remainder is 360 after subtracting 2640 from 3000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

On to step 14:
660 can be fit into 3600 5 times, resulting in a remainder of 300.
Record the quotient 5 as the next digit in the result. 
Result so far: 23015.804545
If we subtract 3300 from 3600, we get 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

On to step 15:
The number 660 fits into 3000 4 times, leaving a remainder of 360.
The number 4 becomes the next digit in our result. 
Result so far: 23015.8045454
If we subtract 2640 from 3000, we get 360.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3600, and continue the process.

Advancing to step 16:
The number 660 fits into 3600 5 times, leaving a remainder of 300.
The next digit of our result is 5. 
Result so far: 23015.80454545
If we take 3300 away from 3600, we end up with 300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3000, and continue the process.

The final result is 23015.80454545 with a remainder of 3e-07.