We're dividing 86916979 by 580 
The aim is to understand the frequency of 580 in 86916979.

On to step 1:
8 divided by 580 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 8 leaves us with 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 580

Step 2:
The number 580 fits into 86 0 times, leaving a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we subtract 0 from 86, we get 86.
Bring next digit (9) of the dividend behind the 86 and repeat the process: 869 / 580

Moving on to step 3:
580 can be fit into 869 1 times, resulting in a remainder of 289.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 580 from 869 to get 289.
Fetch the next digit (1) from the dividend, attach it to 289 and continue: 2891 / 580

Advancing to step 4:
2891 divided by 580 is 4 with a remainder of 571.
Record the quotient 4 as the next digit in the result. 
Result so far: 14.0
If we subtract 2320 from 2891, we get 571.
Grab the next digit (6) from the dividend, add it to 571, then carry on: 5716 / 580

Moving on to step 5:
5716 divided by 580 is 9 with a remainder of 496.
Record the quotient 9 as the next digit in the result. 
Result so far: 149.0
Subtract 5220 from 5716 to get 496.
Fetch the next digit (9) from the dividend, attach it to 496 and continue: 4969 / 580

On to step 6:
580 can be fit into 4969 8 times, resulting in a remainder of 329.
The number 8 becomes the next digit in our result. 
Result so far: 1498.0
The remainder is 329 after subtracting 4640 from 4969.
Include the next digit (7) from the dividend after 329, then repeat: 3297 / 580

Advancing to step 7:
If we divide 3297 by 580, we get 5 and a remainder of 397.
The number 5 becomes the next digit in our result. 
Result so far: 14985.0
Subtract 2900 from 3297 to get 397.
Include the next digit (9) from the dividend after 397, then repeat: 3979 / 580

Moving on to step 8:
3979 divided by 580 is 6 with a remainder of 499.
The number 6 becomes the next digit in our result. 
Result so far: 149856.0
Subtracting 3480 from 3979 leaves us with 499.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4990, and continue the process.

On to step 9:
580 can be fit into 4990 8 times, resulting in a remainder of 350.
Put 8 as the next digit of the answer. 
Result so far: 149856.8
Subtracting 4640 from 4990 leaves us with 350.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3500, and continue the process.

On to step 10:
If we divide 3500 by 580, we get 6 and a remainder of 20.
Write down 6 as next digit of the result. 
Result so far: 149856.86
Subtracting 3480 from 3500 leaves us with 20.
Since there are no more digits in the dividend, we add a zero to the remainder making it 200, and continue the process.

On to step 11:
When dividing 200 by 580, we get 0 with a remainder of 200.
Put 0 as the next digit of the answer. 
Result so far: 149856.86
Subtracting 0 from 200 leaves us with 200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2000, and continue the process.

Moving on to step 12:
2000 divided by 580 is 3 with a remainder of 260.
Put 3 as the next digit of the answer. 
Result so far: 149856.8603
The remainder is 260 after subtracting 1740 from 2000.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2600, and continue the process.

Advancing to step 13:
When dividing 2600 by 580, we get 4 with a remainder of 280.
The next digit of our result is 4. 
Result so far: 149856.86034
If we take 2320 away from 2600, we end up with 280.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2800, and continue the process.

Advancing to step 14:
580 can be fit into 2800 4 times, resulting in a remainder of 480.
Record the quotient 4 as the next digit in the result. 
Result so far: 149856.860344
Subtract 2320 from 2800 to get 480.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4800, and continue the process.

The quotient of the division is 149856.860344, and the remainder is 4.8e-05.