86311166 ÷ 720 
The aim is to understand the frequency of 720 in 86311166.

Advancing to step 1:
8 divided by 720 is 0 with a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Include the next digit (6) from the dividend after 8, then repeat: 86 / 720

Step 2:
If we divide 86 by 720, we get 0 and a remainder of 86.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 86, we end up with 86.
Bring next digit (3) of the dividend behind the 86 and repeat the process: 863 / 720

Step 3:
When dividing 863 by 720, we get 1 with a remainder of 143.
Write down 1 as next digit of the result. 
Result so far: 1.0
Subtract 720 from 863 to get 143.
Fetch the next digit (1) from the dividend, attach it to 143 and continue: 1431 / 720

Let's proceed to step 4:
720 can be fit into 1431 1 times, resulting in a remainder of 711.
The number 1 becomes the next digit in our result. 
Result so far: 11.0
If we subtract 720 from 1431, we get 711.
Fetch the next digit (1) from the dividend, attach it to 711 and continue: 7111 / 720

Advancing to step 5:
720 can be fit into 7111 9 times, resulting in a remainder of 631.
The number 9 becomes the next digit in our result. 
Result so far: 119.0
The remainder is 631 after subtracting 6480 from 7111.
Append the next digit (1) from the dividend to 631 and continue with: 6311 / 720

Going ahead to step 6:
The number 720 fits into 6311 8 times, leaving a remainder of 551.
The number 8 becomes the next digit in our result. 
Result so far: 1198.0
If we subtract 5760 from 6311, we get 551.
Include the next digit (6) from the dividend after 551, then repeat: 5516 / 720

Advancing to step 7:
When dividing 5516 by 720, we get 7 with a remainder of 476.
Use 7 as the next digit of our solution. 
Result so far: 11987.0
If we subtract 5040 from 5516, we get 476.
Grab the next digit (6) from the dividend, add it to 476, then carry on: 4766 / 720

Advancing to step 8:
The number 720 fits into 4766 6 times, leaving a remainder of 446.
Put 6 as the next digit of the answer. 
Result so far: 119876.0
Subtract 4320 from 4766 to get 446.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4460, and continue the process.

Advancing to step 9:
When dividing 4460 by 720, we get 6 with a remainder of 140.
The next digit of our result is 6. 
Result so far: 119876.6
If we take 4320 away from 4460, we end up with 140.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1400, and continue the process.

On to step 10:
720 goes into 1400 1 times with a remainder of 680.
Write down 1 as next digit of the result. 
Result so far: 119876.61
The remainder is 680 after subtracting 720 from 1400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6800, and continue the process.

Advancing to step 11:
If we divide 6800 by 720, we get 9 and a remainder of 320.
Put 9 as the next digit of the answer. 
Result so far: 119876.619
The remainder is 320 after subtracting 6480 from 6800.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Moving on to step 12:
The number 720 fits into 3200 4 times, leaving a remainder of 320.
Use 4 as the next digit of our solution. 
Result so far: 119876.6194
Subtracting 2880 from 3200 leaves us with 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

Advancing to step 13:
3200 divided by 720 is 4 with a remainder of 320.
The number 4 becomes the next digit in our result. 
Result so far: 119876.61944
If we subtract 2880 from 3200, we get 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3200, and continue the process.

The final result is 119876.61944 with a remainder of 0.00032.