We look at the division of 86311713 by 131 
The aim is to understand the frequency of 131 in 86311713.

On to step 1:
The number 131 fits into 8 0 times, leaving a remainder of 8.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Take the next digit (6) from the dividend and append it to 8, then repeat: 86 / 131

Going ahead to step 2:
131 can be fit into 86 0 times, resulting in a remainder of 86.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 86 after subtracting 0 from 86.
Include the next digit (3) from the dividend after 86, then repeat: 863 / 131

Step 3:
131 can be fit into 863 6 times, resulting in a remainder of 77.
Use 6 as the next digit of our solution. 
Result so far: 6.0
Subtracting 786 from 863 leaves us with 77.
Fetch the next digit (1) from the dividend, attach it to 77 and continue: 771 / 131

Step 4:
771 divided by 131 is 5 with a remainder of 116.
The next digit of our result is 5. 
Result so far: 65.0
Deduct 655 from 771 and we're left with 116.
Bring next digit (1) of the dividend behind the 116 and repeat the process: 1161 / 131

Moving on to step 5:
131 goes into 1161 8 times with a remainder of 113.
The number 8 becomes the next digit in our result. 
Result so far: 658.0
If we take 1048 away from 1161, we end up with 113.
Fetch the next digit (7) from the dividend, attach it to 113 and continue: 1137 / 131

Advancing to step 6:
1137 divided by 131 is 8 with a remainder of 89.
The number 8 becomes the next digit in our result. 
Result so far: 6588.0
If we subtract 1048 from 1137, we get 89.
Bring next digit (1) of the dividend behind the 89 and repeat the process: 891 / 131

Advancing to step 7:
131 goes into 891 6 times with a remainder of 105.
The number 6 becomes the next digit in our result. 
Result so far: 65886.0
If we subtract 786 from 891, we get 105.
Fetch the next digit (3) from the dividend, attach it to 105 and continue: 1053 / 131

Step 8:
When dividing 1053 by 131, we get 8 with a remainder of 5.
Write down 8 as next digit of the result. 
Result so far: 658868.0
The remainder is 5 after subtracting 1048 from 1053.
Since there are no more digits in the dividend, we add a zero to the remainder making it 50, and continue the process.

Let's proceed to step 9:
When dividing 50 by 131, we get 0 with a remainder of 50.
The next digit of our result is 0. 
Result so far: 658868.0
Deduct 0 from 50 and we're left with 50.
Since there are no more digits in the dividend, we add a zero to the remainder making it 500, and continue the process.

On to step 10:
The number 131 fits into 500 3 times, leaving a remainder of 107.
Record the quotient 3 as the next digit in the result. 
Result so far: 658868.03
The remainder is 107 after subtracting 393 from 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

On to step 11:
When dividing 1070 by 131, we get 8 with a remainder of 22.
Record the quotient 8 as the next digit in the result. 
Result so far: 658868.038
Subtracting 1048 from 1070 leaves us with 22.
Since there are no more digits in the dividend, we add a zero to the remainder making it 220, and continue the process.

Going ahead to step 12:
If we divide 220 by 131, we get 1 and a remainder of 89.
The number 1 becomes the next digit in our result. 
Result so far: 658868.0381
The remainder is 89 after subtracting 131 from 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 890, and continue the process.

Going ahead to step 13:
If we divide 890 by 131, we get 6 and a remainder of 104.
The next digit of our result is 6. 
Result so far: 658868.03816
If we subtract 786 from 890, we get 104.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1040, and continue the process.

Moving on to step 14:
1040 divided by 131 is 7 with a remainder of 123.
Write down 7 as next digit of the result. 
Result so far: 658868.038167
The remainder is 123 after subtracting 917 from 1040.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1230, and continue the process.

Let's proceed to step 15:
131 can be fit into 1230 9 times, resulting in a remainder of 51.
Use 9 as the next digit of our solution. 
Result so far: 658868.0381679
If we take 1179 away from 1230, we end up with 51.
Since there are no more digits in the dividend, we add a zero to the remainder making it 510, and continue the process.

Going ahead to step 16:
131 goes into 510 3 times with a remainder of 117.
Write down 3 as next digit of the result. 
Result so far: 658868.03816793
The remainder is 117 after subtracting 393 from 510.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1170, and continue the process.

The quotient of the division is 658868.03816793, and the remainder is 1.17e-07.