We look at the division of 78818615 by 973 
The aim is to understand the frequency of 973 in 78818615.

Let's proceed to step 1:
When dividing 7 by 973, we get 0 with a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 973

On to step 2:
973 can be fit into 78 0 times, resulting in a remainder of 78.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Deduct 0 from 78 and we're left with 78.
Bring next digit (8) of the dividend behind the 78 and repeat the process: 788 / 973

Let's proceed to step 3:
973 can be fit into 788 0 times, resulting in a remainder of 788.
Write down 0 as next digit of the result. 
Result so far: 0.0
The remainder is 788 after subtracting 0 from 788.
Take the next digit (1) from the dividend and append it to 788, then repeat: 7881 / 973

Let's proceed to step 4:
973 can be fit into 7881 8 times, resulting in a remainder of 97.
The next digit of our result is 8. 
Result so far: 8.0
The remainder is 97 after subtracting 7784 from 7881.
Include the next digit (8) from the dividend after 97, then repeat: 978 / 973

Going ahead to step 5:
The number 973 fits into 978 1 times, leaving a remainder of 5.
Use 1 as the next digit of our solution. 
Result so far: 81.0
Subtracting 973 from 978 leaves us with 5.
Append the next digit (6) from the dividend to 5 and continue with: 56 / 973

Step 6:
When dividing 56 by 973, we get 0 with a remainder of 56.
Use 0 as the next digit of our solution. 
Result so far: 810.0
If we take 0 away from 56, we end up with 56.
Fetch the next digit (1) from the dividend, attach it to 56 and continue: 561 / 973

Advancing to step 7:
The number 973 fits into 561 0 times, leaving a remainder of 561.
Use 0 as the next digit of our solution. 
Result so far: 8100.0
If we subtract 0 from 561, we get 561.
Include the next digit (5) from the dividend after 561, then repeat: 5615 / 973

Advancing to step 8:
The number 973 fits into 5615 5 times, leaving a remainder of 750.
The next digit of our result is 5. 
Result so far: 81005.0
Subtract 4865 from 5615 to get 750.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7500, and continue the process.

On to step 9:
The number 973 fits into 7500 7 times, leaving a remainder of 689.
The number 7 becomes the next digit in our result. 
Result so far: 81005.7
Subtract 6811 from 7500 to get 689.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6890, and continue the process.

Advancing to step 10:
The number 973 fits into 6890 7 times, leaving a remainder of 79.
Put 7 as the next digit of the answer. 
Result so far: 81005.77
Deduct 6811 from 6890 and we're left with 79.
Since there are no more digits in the dividend, we add a zero to the remainder making it 790, and continue the process.

The quotient of the division is 81005.77, and the remainder is 0.079.