We're dividing 68233706 by 491 
The aim is to understand the frequency of 491 in 68233706.

Going ahead to step 1:
If we divide 6 by 491, we get 0 and a remainder of 6.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 6, we get 6.
Include the next digit (8) from the dividend after 6, then repeat: 68 / 491

Let's proceed to step 2:
The number 491 fits into 68 0 times, leaving a remainder of 68.
The next digit of our result is 0. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Take the next digit (2) from the dividend and append it to 68, then repeat: 682 / 491

Moving on to step 3:
491 goes into 682 1 times with a remainder of 191.
The number 1 becomes the next digit in our result. 
Result so far: 1.0
The remainder is 191 after subtracting 491 from 682.
Include the next digit (3) from the dividend after 191, then repeat: 1913 / 491

On to step 4:
If we divide 1913 by 491, we get 3 and a remainder of 440.
Use 3 as the next digit of our solution. 
Result so far: 13.0
If we take 1473 away from 1913, we end up with 440.
Include the next digit (3) from the dividend after 440, then repeat: 4403 / 491

Step 5:
If we divide 4403 by 491, we get 8 and a remainder of 475.
The number 8 becomes the next digit in our result. 
Result so far: 138.0
If we subtract 3928 from 4403, we get 475.
Grab the next digit (7) from the dividend, add it to 475, then carry on: 4757 / 491

On to step 6:
4757 divided by 491 is 9 with a remainder of 338.
The next digit of our result is 9. 
Result so far: 1389.0
Subtract 4419 from 4757 to get 338.
Append the next digit (0) from the dividend to 338 and continue with: 3380 / 491

Advancing to step 7:
491 goes into 3380 6 times with a remainder of 434.
Record the quotient 6 as the next digit in the result. 
Result so far: 13896.0
Subtracting 2946 from 3380 leaves us with 434.
Grab the next digit (6) from the dividend, add it to 434, then carry on: 4346 / 491

Moving on to step 8:
491 can be fit into 4346 8 times, resulting in a remainder of 418.
The number 8 becomes the next digit in our result. 
Result so far: 138968.0
Deduct 3928 from 4346 and we're left with 418.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4180, and continue the process.

Step 9:
When dividing 4180 by 491, we get 8 with a remainder of 252.
Use 8 as the next digit of our solution. 
Result so far: 138968.8
The remainder is 252 after subtracting 3928 from 4180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2520, and continue the process.

Let's proceed to step 10:
The number 491 fits into 2520 5 times, leaving a remainder of 65.
The number 5 becomes the next digit in our result. 
Result so far: 138968.85
If we subtract 2455 from 2520, we get 65.
Since there are no more digits in the dividend, we add a zero to the remainder making it 650, and continue the process.

Advancing to step 11:
When dividing 650 by 491, we get 1 with a remainder of 159.
The next digit of our result is 1. 
Result so far: 138968.851
If we take 491 away from 650, we end up with 159.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1590, and continue the process.

Moving on to step 12:
When dividing 1590 by 491, we get 3 with a remainder of 117.
Put 3 as the next digit of the answer. 
Result so far: 138968.8513
Subtract 1473 from 1590 to get 117.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

Step 13:
491 goes into 1170 2 times with a remainder of 188.
Record the quotient 2 as the next digit in the result. 
Result so far: 138968.85132
Subtract 982 from 1170 to get 188.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1880, and continue the process.

Advancing to step 14:
If we divide 1880 by 491, we get 3 and a remainder of 407.
Use 3 as the next digit of our solution. 
Result so far: 138968.851323
If we take 1473 away from 1880, we end up with 407.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4070, and continue the process.

Moving on to step 15:
The number 491 fits into 4070 8 times, leaving a remainder of 142.
Use 8 as the next digit of our solution. 
Result so far: 138968.8513238
Subtract 3928 from 4070 to get 142.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1420, and continue the process.

Let's proceed to step 16:
The number 491 fits into 1420 2 times, leaving a remainder of 438.
The number 2 becomes the next digit in our result. 
Result so far: 138968.85132382
Deduct 982 from 1420 and we're left with 438.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4380, and continue the process.

The final outcome is 138968.85132382, with a leftover of 4.38e-07.