We're dividing 72010083 by 686 
The aim is to understand the frequency of 686 in 72010083.

Step 1:
7 divided by 686 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Bring next digit (2) of the dividend behind the 7 and repeat the process: 72 / 686

Advancing to step 2:
The number 686 fits into 72 0 times, leaving a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 72 after subtracting 0 from 72.
Fetch the next digit (0) from the dividend, attach it to 72 and continue: 720 / 686

Let's proceed to step 3:
The number 686 fits into 720 1 times, leaving a remainder of 34.
Write down 1 as next digit of the result. 
Result so far: 1.0
Deduct 686 from 720 and we're left with 34.
Bring next digit (1) of the dividend behind the 34 and repeat the process: 341 / 686

Moving on to step 4:
686 can be fit into 341 0 times, resulting in a remainder of 341.
Record the quotient 0 as the next digit in the result. 
Result so far: 10.0
If we subtract 0 from 341, we get 341.
Append the next digit (0) from the dividend to 341 and continue with: 3410 / 686

Step 5:
If we divide 3410 by 686, we get 4 and a remainder of 666.
Write down 4 as next digit of the result. 
Result so far: 104.0
Subtract 2744 from 3410 to get 666.
Take the next digit (0) from the dividend and append it to 666, then repeat: 6660 / 686

Going ahead to step 6:
The number 686 fits into 6660 9 times, leaving a remainder of 486.
Record the quotient 9 as the next digit in the result. 
Result so far: 1049.0
The remainder is 486 after subtracting 6174 from 6660.
Append the next digit (8) from the dividend to 486 and continue with: 4868 / 686

Advancing to step 7:
When dividing 4868 by 686, we get 7 with a remainder of 66.
Write down 7 as next digit of the result. 
Result so far: 10497.0
Subtract 4802 from 4868 to get 66.
Include the next digit (3) from the dividend after 66, then repeat: 663 / 686

On to step 8:
If we divide 663 by 686, we get 0 and a remainder of 663.
The number 0 becomes the next digit in our result. 
Result so far: 104970.0
Subtract 0 from 663 to get 663.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6630, and continue the process.

Step 9:
When dividing 6630 by 686, we get 9 with a remainder of 456.
Write down 9 as next digit of the result. 
Result so far: 104970.9
Deduct 6174 from 6630 and we're left with 456.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4560, and continue the process.

Let's proceed to step 10:
The number 686 fits into 4560 6 times, leaving a remainder of 444.
The number 6 becomes the next digit in our result. 
Result so far: 104970.96
If we take 4116 away from 4560, we end up with 444.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4440, and continue the process.

Advancing to step 11:
If we divide 4440 by 686, we get 6 and a remainder of 324.
Record the quotient 6 as the next digit in the result. 
Result so far: 104970.966
Deduct 4116 from 4440 and we're left with 324.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3240, and continue the process.

After the division, we end up with 104970.966 and a remainder of 0.0324.