We're dividing 78506598 by 81 
We want to figure out the number of times 78506598 can be divided by 81.

On to step 1:
81 goes into 7 0 times with a remainder of 7.
Put 0 as the next digit of the answer. 
Result so far: 0.0
If we subtract 0 from 7, we get 7.
Take the next digit (8) from the dividend and append it to 7, then repeat: 78 / 81

Moving on to step 2:
If we divide 78 by 81, we get 0 and a remainder of 78.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Grab the next digit (5) from the dividend, add it to 78, then carry on: 785 / 81

On to step 3:
81 can be fit into 785 9 times, resulting in a remainder of 56.
Write down 9 as next digit of the result. 
Result so far: 9.0
The remainder is 56 after subtracting 729 from 785.
Grab the next digit (0) from the dividend, add it to 56, then carry on: 560 / 81

On to step 4:
81 goes into 560 6 times with a remainder of 74.
Put 6 as the next digit of the answer. 
Result so far: 96.0
The remainder is 74 after subtracting 486 from 560.
Bring next digit (6) of the dividend behind the 74 and repeat the process: 746 / 81

Moving on to step 5:
The number 81 fits into 746 9 times, leaving a remainder of 17.
Put 9 as the next digit of the answer. 
Result so far: 969.0
Deduct 729 from 746 and we're left with 17.
Append the next digit (5) from the dividend to 17 and continue with: 175 / 81

Moving on to step 6:
The number 81 fits into 175 2 times, leaving a remainder of 13.
The number 2 becomes the next digit in our result. 
Result so far: 9692.0
The remainder is 13 after subtracting 162 from 175.
Grab the next digit (9) from the dividend, add it to 13, then carry on: 139 / 81

Moving on to step 7:
If we divide 139 by 81, we get 1 and a remainder of 58.
Put 1 as the next digit of the answer. 
Result so far: 96921.0
If we take 81 away from 139, we end up with 58.
Append the next digit (8) from the dividend to 58 and continue with: 588 / 81

On to step 8:
The number 81 fits into 588 7 times, leaving a remainder of 21.
Write down 7 as next digit of the result. 
Result so far: 969217.0
Subtract 567 from 588 to get 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Going ahead to step 9:
If we divide 210 by 81, we get 2 and a remainder of 48.
The number 2 becomes the next digit in our result. 
Result so far: 969217.2
Subtract 162 from 210 to get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 10:
The number 81 fits into 480 5 times, leaving a remainder of 75.
The number 5 becomes the next digit in our result. 
Result so far: 969217.25
Subtract 405 from 480 to get 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Let's proceed to step 11:
81 goes into 750 9 times with a remainder of 21.
The next digit of our result is 9. 
Result so far: 969217.259
Deduct 729 from 750 and we're left with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Let's proceed to step 12:
81 can be fit into 210 2 times, resulting in a remainder of 48.
Put 2 as the next digit of the answer. 
Result so far: 969217.2592
Deduct 162 from 210 and we're left with 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Going ahead to step 13:
480 divided by 81 is 5 with a remainder of 75.
The next digit of our result is 5. 
Result so far: 969217.25925
Subtracting 405 from 480 leaves us with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

Moving on to step 14:
The number 81 fits into 750 9 times, leaving a remainder of 21.
Use 9 as the next digit of our solution. 
Result so far: 969217.259259
Subtracting 729 from 750 leaves us with 21.
Since there are no more digits in the dividend, we add a zero to the remainder making it 210, and continue the process.

Advancing to step 15:
210 divided by 81 is 2 with a remainder of 48.
Record the quotient 2 as the next digit in the result. 
Result so far: 969217.2592592
If we subtract 162 from 210, we get 48.
Since there are no more digits in the dividend, we add a zero to the remainder making it 480, and continue the process.

Step 16:
81 goes into 480 5 times with a remainder of 75.
Put 5 as the next digit of the answer. 
Result so far: 969217.25925925
Deduct 405 from 480 and we're left with 75.
Since there are no more digits in the dividend, we add a zero to the remainder making it 750, and continue the process.

In conclusion, the division gives 969217.25925925 with a balance of 7.5e-08.