We look at the division of 720806 by 87 
The aim is to understand the frequency of 87 in 720806.

Let's proceed to step 1:
When dividing 7 by 87, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Append the next digit (2) from the dividend to 7 and continue with: 72 / 87

Advancing to step 2:
The number 87 fits into 72 0 times, leaving a remainder of 72.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 72, we get 72.
Include the next digit (0) from the dividend after 72, then repeat: 720 / 87

Step 3:
When dividing 720 by 87, we get 8 with a remainder of 24.
Use 8 as the next digit of our solution. 
Result so far: 8.0
The remainder is 24 after subtracting 696 from 720.
Take the next digit (8) from the dividend and append it to 24, then repeat: 248 / 87

Advancing to step 4:
If we divide 248 by 87, we get 2 and a remainder of 74.
Record the quotient 2 as the next digit in the result. 
Result so far: 82.0
If we take 174 away from 248, we end up with 74.
Grab the next digit (0) from the dividend, add it to 74, then carry on: 740 / 87

Advancing to step 5:
87 goes into 740 8 times with a remainder of 44.
The number 8 becomes the next digit in our result. 
Result so far: 828.0
The remainder is 44 after subtracting 696 from 740.
Bring next digit (6) of the dividend behind the 44 and repeat the process: 446 / 87

Moving on to step 6:
446 divided by 87 is 5 with a remainder of 11.
Write down 5 as next digit of the result. 
Result so far: 8285.0
Subtract 435 from 446 to get 11.
Since there are no more digits in the dividend, we add a zero to the remainder making it 110, and continue the process.

Let's proceed to step 7:
The number 87 fits into 110 1 times, leaving a remainder of 23.
Write down 1 as next digit of the result. 
Result so far: 8285.1
The remainder is 23 after subtracting 87 from 110.
Since there are no more digits in the dividend, we add a zero to the remainder making it 230, and continue the process.

Advancing to step 8:
87 goes into 230 2 times with a remainder of 56.
Use 2 as the next digit of our solution. 
Result so far: 8285.12
If we take 174 away from 230, we end up with 56.
Since there are no more digits in the dividend, we add a zero to the remainder making it 560, and continue the process.

Advancing to step 9:
If we divide 560 by 87, we get 6 and a remainder of 38.
Record the quotient 6 as the next digit in the result. 
Result so far: 8285.126
The remainder is 38 after subtracting 522 from 560.
Since there are no more digits in the dividend, we add a zero to the remainder making it 380, and continue the process.

On to step 10:
The number 87 fits into 380 4 times, leaving a remainder of 32.
The next digit of our result is 4. 
Result so far: 8285.1264
If we take 348 away from 380, we end up with 32.
Since there are no more digits in the dividend, we add a zero to the remainder making it 320, and continue the process.

Advancing to step 11:
The number 87 fits into 320 3 times, leaving a remainder of 59.
Put 3 as the next digit of the answer. 
Result so far: 8285.12643
The remainder is 59 after subtracting 261 from 320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Moving on to step 12:
If we divide 590 by 87, we get 6 and a remainder of 68.
The next digit of our result is 6. 
Result so far: 8285.126436
Deduct 522 from 590 and we're left with 68.
Since there are no more digits in the dividend, we add a zero to the remainder making it 680, and continue the process.

Moving on to step 13:
680 divided by 87 is 7 with a remainder of 71.
Write down 7 as next digit of the result. 
Result so far: 8285.1264367
If we take 609 away from 680, we end up with 71.
Since there are no more digits in the dividend, we add a zero to the remainder making it 710, and continue the process.

Advancing to step 14:
710 divided by 87 is 8 with a remainder of 14.
Use 8 as the next digit of our solution. 
Result so far: 8285.12643678
If we take 696 away from 710, we end up with 14.
Since there are no more digits in the dividend, we add a zero to the remainder making it 140, and continue the process.

After the division, we end up with 8285.12643678 and a remainder of 1.4e-08.