78317578 divided by 291 
The aim is to understand the frequency of 291 in 78317578.

On to step 1:
If we divide 7 by 291, we get 0 and a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 7 leaves us with 7.
Bring next digit (8) of the dividend behind the 7 and repeat the process: 78 / 291

Going ahead to step 2:
When dividing 78 by 291, we get 0 with a remainder of 78.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Include the next digit (3) from the dividend after 78, then repeat: 783 / 291

Let's proceed to step 3:
The number 291 fits into 783 2 times, leaving a remainder of 201.
Use 2 as the next digit of our solution. 
Result so far: 2.0
If we subtract 582 from 783, we get 201.
Bring next digit (1) of the dividend behind the 201 and repeat the process: 2011 / 291

Step 4:
When dividing 2011 by 291, we get 6 with a remainder of 265.
Record the quotient 6 as the next digit in the result. 
Result so far: 26.0
The remainder is 265 after subtracting 1746 from 2011.
Fetch the next digit (7) from the dividend, attach it to 265 and continue: 2657 / 291

Moving on to step 5:
The number 291 fits into 2657 9 times, leaving a remainder of 38.
Write down 9 as next digit of the result. 
Result so far: 269.0
The remainder is 38 after subtracting 2619 from 2657.
Take the next digit (5) from the dividend and append it to 38, then repeat: 385 / 291

Going ahead to step 6:
When dividing 385 by 291, we get 1 with a remainder of 94.
Write down 1 as next digit of the result. 
Result so far: 2691.0
Subtracting 291 from 385 leaves us with 94.
Include the next digit (7) from the dividend after 94, then repeat: 947 / 291

Advancing to step 7:
291 goes into 947 3 times with a remainder of 74.
The next digit of our result is 3. 
Result so far: 26913.0
If we take 873 away from 947, we end up with 74.
Include the next digit (8) from the dividend after 74, then repeat: 748 / 291

Moving on to step 8:
291 can be fit into 748 2 times, resulting in a remainder of 166.
Write down 2 as next digit of the result. 
Result so far: 269132.0
Subtract 582 from 748 to get 166.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1660, and continue the process.

Going ahead to step 9:
291 can be fit into 1660 5 times, resulting in a remainder of 205.
Use 5 as the next digit of our solution. 
Result so far: 269132.5
If we subtract 1455 from 1660, we get 205.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2050, and continue the process.

Let's proceed to step 10:
291 can be fit into 2050 7 times, resulting in a remainder of 13.
Record the quotient 7 as the next digit in the result. 
Result so far: 269132.57
If we subtract 2037 from 2050, we get 13.
Since there are no more digits in the dividend, we add a zero to the remainder making it 130, and continue the process.

Step 11:
If we divide 130 by 291, we get 0 and a remainder of 130.
Record the quotient 0 as the next digit in the result. 
Result so far: 269132.57
The remainder is 130 after subtracting 0 from 130.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1300, and continue the process.

On to step 12:
If we divide 1300 by 291, we get 4 and a remainder of 136.
The next digit of our result is 4. 
Result so far: 269132.5704
The remainder is 136 after subtracting 1164 from 1300.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1360, and continue the process.

Let's proceed to step 13:
1360 divided by 291 is 4 with a remainder of 196.
Write down 4 as next digit of the result. 
Result so far: 269132.57044
If we take 1164 away from 1360, we end up with 196.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1960, and continue the process.

The final result is 269132.57044 with a remainder of 0.000196.