We divide 68665840 by 581
The aim is to understand the frequency of 581 in 68665840.

Moving on to step 1:
If we divide 6 by 581, we get 0 and a remainder of 6.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 6 after subtracting 0 from 6.
Take the next digit (8) from the dividend and append it to 6, then repeat: 68 / 581

Advancing to step 2:
When dividing 68 by 581, we get 0 with a remainder of 68.
Use 0 as the next digit of our solution. 
Result so far: 0.0
If we subtract 0 from 68, we get 68.
Bring next digit (6) of the dividend behind the 68 and repeat the process: 686 / 581

Advancing to step 3:
When dividing 686 by 581, we get 1 with a remainder of 105.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Deduct 581 from 686 and we're left with 105.
Fetch the next digit (6) from the dividend, attach it to 105 and continue: 1056 / 581

Going ahead to step 4:
1056 divided by 581 is 1 with a remainder of 475.
Record the quotient 1 as the next digit in the result. 
Result so far: 11.0
Subtract 581 from 1056 to get 475.
Fetch the next digit (5) from the dividend, attach it to 475 and continue: 4755 / 581

Step 5:
When dividing 4755 by 581, we get 8 with a remainder of 107.
Use 8 as the next digit of our solution. 
Result so far: 118.0
If we subtract 4648 from 4755, we get 107.
Include the next digit (8) from the dividend after 107, then repeat: 1078 / 581

Moving on to step 6:
When dividing 1078 by 581, we get 1 with a remainder of 497.
Use 1 as the next digit of our solution. 
Result so far: 1181.0
The remainder is 497 after subtracting 581 from 1078.
Bring next digit (4) of the dividend behind the 497 and repeat the process: 4974 / 581

Moving on to step 7:
If we divide 4974 by 581, we get 8 and a remainder of 326.
Use 8 as the next digit of our solution. 
Result so far: 11818.0
The remainder is 326 after subtracting 4648 from 4974.
Take the next digit (0) from the dividend and append it to 326, then repeat: 3260 / 581

Moving on to step 8:
The number 581 fits into 3260 5 times, leaving a remainder of 355.
Use 5 as the next digit of our solution. 
Result so far: 118185.0
The remainder is 355 after subtracting 2905 from 3260.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3550, and continue the process.

Let's proceed to step 9:
581 goes into 3550 6 times with a remainder of 64.
Use 6 as the next digit of our solution. 
Result so far: 118185.6
Subtract 3486 from 3550 to get 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 10:
581 goes into 640 1 times with a remainder of 59.
Write down 1 as next digit of the result. 
Result so far: 118185.61
The remainder is 59 after subtracting 581 from 640.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Let's proceed to step 11:
590 divided by 581 is 1 with a remainder of 9.
The number 1 becomes the next digit in our result. 
Result so far: 118185.611
Subtract 581 from 590 to get 9.
Since there are no more digits in the dividend, we add a zero to the remainder making it 90, and continue the process.

The final result is 118185.611 with a remainder of 0.0009.