We look at the division of 31860667 by 491 
The aim is to understand the frequency of 491 in 31860667.

Step 1:
3 divided by 491 is 0 with a remainder of 3.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 3 leaves us with 3.
Append the next digit (1) from the dividend to 3 and continue with: 31 / 491

Going ahead to step 2:
If we divide 31 by 491, we get 0 and a remainder of 31.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 31 leaves us with 31.
Append the next digit (8) from the dividend to 31 and continue with: 318 / 491

Step 3:
The number 491 fits into 318 0 times, leaving a remainder of 318.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 318 after subtracting 0 from 318.
Bring next digit (6) of the dividend behind the 318 and repeat the process: 3186 / 491

Let's proceed to step 4:
The number 491 fits into 3186 6 times, leaving a remainder of 240.
The next digit of our result is 6. 
Result so far: 6.0
If we subtract 2946 from 3186, we get 240.
Take the next digit (0) from the dividend and append it to 240, then repeat: 2400 / 491

Moving on to step 5:
If we divide 2400 by 491, we get 4 and a remainder of 436.
The number 4 becomes the next digit in our result. 
Result so far: 64.0
If we subtract 1964 from 2400, we get 436.
Include the next digit (6) from the dividend after 436, then repeat: 4366 / 491

On to step 6:
4366 divided by 491 is 8 with a remainder of 438.
The number 8 becomes the next digit in our result. 
Result so far: 648.0
If we take 3928 away from 4366, we end up with 438.
Bring next digit (6) of the dividend behind the 438 and repeat the process: 4386 / 491

Step 7:
491 can be fit into 4386 8 times, resulting in a remainder of 458.
Record the quotient 8 as the next digit in the result. 
Result so far: 6488.0
Subtract 3928 from 4386 to get 458.
Bring next digit (7) of the dividend behind the 458 and repeat the process: 4587 / 491

Step 8:
491 can be fit into 4587 9 times, resulting in a remainder of 168.
Use 9 as the next digit of our solution. 
Result so far: 64889.0
If we take 4419 away from 4587, we end up with 168.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1680, and continue the process.

Going ahead to step 9:
1680 divided by 491 is 3 with a remainder of 207.
The number 3 becomes the next digit in our result. 
Result so far: 64889.3
Subtract 1473 from 1680 to get 207.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2070, and continue the process.

Advancing to step 10:
491 can be fit into 2070 4 times, resulting in a remainder of 106.
Write down 4 as next digit of the result. 
Result so far: 64889.34
If we subtract 1964 from 2070, we get 106.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1060, and continue the process.

Step 11:
491 can be fit into 1060 2 times, resulting in a remainder of 78.
Put 2 as the next digit of the answer. 
Result so far: 64889.342
Deduct 982 from 1060 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.

Going ahead to step 12:
491 can be fit into 780 1 times, resulting in a remainder of 289.
The number 1 becomes the next digit in our result. 
Result so far: 64889.3421
Subtracting 491 from 780 leaves us with 289.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2890, and continue the process.

Advancing to step 13:
If we divide 2890 by 491, we get 5 and a remainder of 435.
Put 5 as the next digit of the answer. 
Result so far: 64889.34215
If we take 2455 away from 2890, we end up with 435.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4350, and continue the process.

On to step 14:
491 goes into 4350 8 times with a remainder of 422.
The number 8 becomes the next digit in our result. 
Result so far: 64889.342158
Subtract 3928 from 4350 to get 422.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4220, and continue the process.

Step 15:
4220 divided by 491 is 8 with a remainder of 292.
Use 8 as the next digit of our solution. 
Result so far: 64889.3421588
The remainder is 292 after subtracting 3928 from 4220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2920, and continue the process.

After the division, we end up with 64889.3421588 and a remainder of 2.92e-06.