We divide 6660321 by 431
The aim is to understand the frequency of 431 in 6660321.

Step 1:
The number 431 fits into 6 0 times, leaving a remainder of 6.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 6 leaves us with 6.
Append the next digit (6) from the dividend to 6 and continue with: 66 / 431

Advancing to step 2:
431 can be fit into 66 0 times, resulting in a remainder of 66.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 66, we get 66.
Fetch the next digit (6) from the dividend, attach it to 66 and continue: 666 / 431

Advancing to step 3:
If we divide 666 by 431, we get 1 and a remainder of 235.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 431 from 666 and we're left with 235.
Fetch the next digit (0) from the dividend, attach it to 235 and continue: 2350 / 431

Advancing to step 4:
If we divide 2350 by 431, we get 5 and a remainder of 195.
Use 5 as the next digit of our solution. 
Result so far: 15.0
If we take 2155 away from 2350, we end up with 195.
Grab the next digit (3) from the dividend, add it to 195, then carry on: 1953 / 431

Moving on to step 5:
431 goes into 1953 4 times with a remainder of 229.
Use 4 as the next digit of our solution. 
Result so far: 154.0
Subtracting 1724 from 1953 leaves us with 229.
Fetch the next digit (2) from the dividend, attach it to 229 and continue: 2292 / 431

Going ahead to step 6:
When dividing 2292 by 431, we get 5 with a remainder of 137.
Record the quotient 5 as the next digit in the result. 
Result so far: 1545.0
If we subtract 2155 from 2292, we get 137.
Take the next digit (1) from the dividend and append it to 137, then repeat: 1371 / 431

Going ahead to step 7:
When dividing 1371 by 431, we get 3 with a remainder of 78.
Write down 3 as next digit of the result. 
Result so far: 15453.0
Deduct 1293 from 1371 and we're left with 78.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

Moving on to step 8:
431 can be fit into 780 1 times, resulting in a remainder of 349.
Record the quotient 1 as the next digit in the result. 
Result so far: 15453.1
The remainder is 349 after subtracting 431 from 780.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3490, and continue the process.

Advancing to step 9:
431 goes into 3490 8 times with a remainder of 42.
The next digit of our result is 8. 
Result so far: 15453.18
Subtract 3448 from 3490 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Let's proceed to step 10:
When dividing 420 by 431, we get 0 with a remainder of 420.
The next digit of our result is 0. 
Result so far: 15453.18
Subtract 0 from 420 to get 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Let's proceed to step 11:
The number 431 fits into 4200 9 times, leaving a remainder of 321.
The number 9 becomes the next digit in our result. 
Result so far: 15453.1809
Deduct 3879 from 4200 and we're left with 321.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3210, and continue the process.

Going ahead to step 12:
When dividing 3210 by 431, we get 7 with a remainder of 193.
The next digit of our result is 7. 
Result so far: 15453.18097
The remainder is 193 after subtracting 3017 from 3210.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1930, and continue the process.

Step 13:
The number 431 fits into 1930 4 times, leaving a remainder of 206.
Use 4 as the next digit of our solution. 
Result so far: 15453.180974
If we subtract 1724 from 1930, we get 206.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2060, and continue the process.

Advancing to step 14:
If we divide 2060 by 431, we get 4 and a remainder of 336.
Use 4 as the next digit of our solution. 
Result so far: 15453.1809744
If we subtract 1724 from 2060, we get 336.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3360, and continue the process.

The quotient of the division is 15453.1809744, and the remainder is 3.36e-06.