Let's divide 87458471 by 669
The aim is to understand the frequency of 669 in 87458471.

Going ahead to step 1:
8 divided by 669 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 669

Let's proceed to step 2:
The number 669 fits into 87 0 times, leaving a remainder of 87.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Subtracting 0 from 87 leaves us with 87.
Bring next digit (4) of the dividend behind the 87 and repeat the process: 874 / 669

On to step 3:
If we divide 874 by 669, we get 1 and a remainder of 205.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 669 from 874 and we're left with 205.
Append the next digit (5) from the dividend to 205 and continue with: 2055 / 669

Going ahead to step 4:
2055 divided by 669 is 3 with a remainder of 48.
Put 3 as the next digit of the answer. 
Result so far: 13.0
Subtracting 2007 from 2055 leaves us with 48.
Include the next digit (8) from the dividend after 48, then repeat: 488 / 669

Let's proceed to step 5:
669 can be fit into 488 0 times, resulting in a remainder of 488.
The number 0 becomes the next digit in our result. 
Result so far: 130.0
Subtract 0 from 488 to get 488.
Append the next digit (4) from the dividend to 488 and continue with: 4884 / 669

Step 6:
When dividing 4884 by 669, we get 7 with a remainder of 201.
The number 7 becomes the next digit in our result. 
Result so far: 1307.0
Subtract 4683 from 4884 to get 201.
Take the next digit (7) from the dividend and append it to 201, then repeat: 2017 / 669

Step 7:
The number 669 fits into 2017 3 times, leaving a remainder of 10.
Record the quotient 3 as the next digit in the result. 
Result so far: 13073.0
If we take 2007 away from 2017, we end up with 10.
Bring next digit (1) of the dividend behind the 10 and repeat the process: 101 / 669

Let's proceed to step 8:
When dividing 101 by 669, we get 0 with a remainder of 101.
Use 0 as the next digit of our solution. 
Result so far: 130730.0
Deduct 0 from 101 and we're left with 101.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1010, and continue the process.

On to step 9:
669 can be fit into 1010 1 times, resulting in a remainder of 341.
Use 1 as the next digit of our solution. 
Result so far: 130730.1
Deduct 669 from 1010 and we're left with 341.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3410, and continue the process.

Step 10:
669 can be fit into 3410 5 times, resulting in a remainder of 65.
Record the quotient 5 as the next digit in the result. 
Result so far: 130730.15
Subtracting 3345 from 3410 leaves us with 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Going ahead to step 11:
If we divide 650 by 669, we get 0 and a remainder of 650.
Use 0 as the next digit of our solution. 
Result so far: 130730.15
Deduct 0 from 650 and we're left 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.

On to step 12:
If we divide 6500 by 669, we get 9 and a remainder of 479.
Use 9 as the next digit of our solution. 
Result so far: 130730.1509
If we take 6021 away from 6500, we end up with 479.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4790, and continue the process.

Step 13:
669 goes into 4790 7 times with a remainder of 107.
Write down 7 as next digit of the result. 
Result so far: 130730.15097
The remainder is 107 after subtracting 4683 from 4790.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

On to step 14:
When dividing 1070 by 669, we get 1 with a remainder of 401.
Use 1 as the next digit of our solution. 
Result so far: 130730.150971
If we subtract 669 from 1070, we get 401.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4010, and continue the process.

Moving on to step 15:
When dividing 4010 by 669, we get 5 with a remainder of 665.
Use 5 as the next digit of our solution. 
Result so far: 130730.1509715
If we take 3345 away from 4010, we end up with 665.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6650, and continue the process.

Moving on to step 16:
669 can be fit into 6650 9 times, resulting in a remainder of 629.
Put 9 as the next digit of the answer. 
Result so far: 130730.15097159
Deduct 6021 from 6650 and we're left with 629.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6290, and continue the process.

The quotient of the division is 130730.15097159, and the remainder is 6.29e-07.