We're dividing 51071317 by 591 
The aim is to understand the frequency of 591 in 51071317.

Moving on to step 1:
When dividing 5 by 591, we get 0 with a remainder of 5.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we subtract 0 from 5, we get 5.
Grab the next digit (1) from the dividend, add it to 5, then carry on: 51 / 591

Step 2:
When dividing 51 by 591, we get 0 with a remainder of 51.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 51 after subtracting 0 from 51.
Fetch the next digit (0) from the dividend, attach it to 51 and continue: 510 / 591

Going ahead to step 3:
591 can be fit into 510 0 times, resulting in a remainder of 510.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 510 to get 510.
Include the next digit (7) from the dividend after 510, then repeat: 5107 / 591

Let's proceed to step 4:
591 can be fit into 5107 8 times, resulting in a remainder of 379.
Write down 8 as next digit of the result. 
Result so far: 8.0
If we take 4728 away from 5107, we end up with 379.
Bring next digit (1) of the dividend behind the 379 and repeat the process: 3791 / 591

Moving on to step 5:
If we divide 3791 by 591, we get 6 and a remainder of 245.
Write down 6 as next digit of the result. 
Result so far: 86.0
If we subtract 3546 from 3791, we get 245.
Take the next digit (3) from the dividend and append it to 245, then repeat: 2453 / 591

Going ahead to step 6:
The number 591 fits into 2453 4 times, leaving a remainder of 89.
Record the quotient 4 as the next digit in the result. 
Result so far: 864.0
The remainder is 89 after subtracting 2364 from 2453.
Include the next digit (1) from the dividend after 89, then repeat: 891 / 591

Let's proceed to step 7:
591 goes into 891 1 times with a remainder of 300.
Use 1 as the next digit of our solution. 
Result so far: 8641.0
The remainder is 300 after subtracting 591 from 891.
Append the next digit (7) from the dividend to 300 and continue with: 3007 / 591

Let's proceed to step 8:
591 goes into 3007 5 times with a remainder of 52.
Record the quotient 5 as the next digit in the result. 
Result so far: 86415.0
If we take 2955 away from 3007, we end up with 52.
Since there are no more digits in the dividend, we add a zero to the remainder making it 520, and continue the process.

Advancing to step 9:
If we divide 520 by 591, we get 0 and a remainder of 520.
The next digit of our result is 0. 
Result so far: 86415.0
The remainder is 520 after subtracting 0 from 520.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5200, and continue the process.

Going ahead to step 10:
591 can be fit into 5200 8 times, resulting in a remainder of 472.
Use 8 as the next digit of our solution. 
Result so far: 86415.08
Subtract 4728 from 5200 to get 472.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4720, and continue the process.

On to step 11:
591 goes into 4720 7 times with a remainder of 583.
Record the quotient 7 as the next digit in the result. 
Result so far: 86415.087
Deduct 4137 from 4720 and we're left with 583.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5830, and continue the process.

On to step 12:
5830 divided by 591 is 9 with a remainder of 511.
Write down 9 as next digit of the result. 
Result so far: 86415.0879
If we take 5319 away from 5830, we end up with 511.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5110, and continue the process.

Going ahead to step 13:
The number 591 fits into 5110 8 times, leaving a remainder of 382.
Use 8 as the next digit of our solution. 
Result so far: 86415.08798
The remainder is 382 after subtracting 4728 from 5110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3820, and continue the process.

Going ahead to step 14:
The number 591 fits into 3820 6 times, leaving a remainder of 274.
Write down 6 as next digit of the result. 
Result so far: 86415.087986
Subtract 3546 from 3820 to get 274.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2740, and continue the process.

Step 15:
When dividing 2740 by 591, we get 4 with a remainder of 376.
The next digit of our result is 4. 
Result so far: 86415.0879864
Subtract 2364 from 2740 to get 376.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3760, and continue the process.

Advancing to step 16:
If we divide 3760 by 591, we get 6 and a remainder of 214.
Record the quotient 6 as the next digit in the result. 
Result so far: 86415.08798646
If we subtract 3546 from 3760, we get 214.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2140, and continue the process.

The final outcome is 86415.08798646, with a leftover of 2.14e-07.