87120806 divided by 702 
The aim is to understand the frequency of 702 in 87120806.

Step 1:
If we divide 8 by 702, we get 0 and a remainder of 8.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Fetch the next digit (7) from the dividend, attach it to 8 and continue: 87 / 702

Step 2:
The number 702 fits into 87 0 times, leaving a remainder of 87.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 87, we end up with 87.
Append the next digit (1) from the dividend to 87 and continue with: 871 / 702

Advancing to step 3:
871 divided by 702 is 1 with a remainder of 169.
Put 1 as the next digit of the answer. 
Result so far: 1.0
If we subtract 702 from 871, we get 169.
Append the next digit (2) from the dividend to 169 and continue with: 1692 / 702

Step 4:
702 can be fit into 1692 2 times, resulting in a remainder of 288.
Record the quotient 2 as the next digit in the result. 
Result so far: 12.0
The remainder is 288 after subtracting 1404 from 1692.
Include the next digit (0) from the dividend after 288, then repeat: 2880 / 702

Step 5:
702 goes into 2880 4 times with a remainder of 72.
The next digit of our result is 4. 
Result so far: 124.0
If we take 2808 away from 2880, we end up with 72.
Bring next digit (8) of the dividend behind the 72 and repeat the process: 728 / 702

Advancing to step 6:
When dividing 728 by 702, we get 1 with a remainder of 26.
Use 1 as the next digit of our solution. 
Result so far: 1241.0
If we take 702 away from 728, we end up with 26.
Include the next digit (0) from the dividend after 26, then repeat: 260 / 702

Let's proceed to step 7:
260 divided by 702 is 0 with a remainder of 260.
The next digit of our result is 0. 
Result so far: 12410.0
If we subtract 0 from 260, we get 260.
Append the next digit (6) from the dividend to 260 and continue with: 2606 / 702

On to step 8:
When dividing 2606 by 702, we get 3 with a remainder of 500.
Record the quotient 3 as the next digit in the result. 
Result so far: 124103.0
Subtracting 2106 from 2606 leaves us with 500.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5000, and continue the process.

On to step 9:
The number 702 fits into 5000 7 times, leaving a remainder of 86.
Put 7 as the next digit of the answer. 
Result so far: 124103.7
If we subtract 4914 from 5000, we get 86.
Since there are no more digits in the dividend, we add a zero to the remainder making it 860, and continue the process.

Advancing to step 10:
The number 702 fits into 860 1 times, leaving a remainder of 158.
The number 1 becomes the next digit in our result. 
Result so far: 124103.71
If we take 702 away from 860, we end up with 158.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1580, and continue the process.

On to step 11:
702 can be fit into 1580 2 times, resulting in a remainder of 176.
Record the quotient 2 as the next digit in the result. 
Result so far: 124103.712
Subtracting 1404 from 1580 leaves us with 176.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1760, and continue the process.

On to step 12:
When dividing 1760 by 702, we get 2 with a remainder of 356.
Put 2 as the next digit of the answer. 
Result so far: 124103.7122
Deduct 1404 from 1760 and we're left with 356.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3560, and continue the process.

The final outcome is 124103.7122, with a leftover of 0.00356.