We look at the division of 78102480 by 810 
Let's see how many times 810 fits into 78102480.

Step 1:
7 divided by 810 is 0 with a remainder of 7.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
Deduct 0 from 7 and we're left with 7.
Append the next digit (8) from the dividend to 7 and continue with: 78 / 810

Step 2:
When dividing 78 by 810, we get 0 with 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.
Fetch the next digit (1) from the dividend, attach it to 78 and continue: 781 / 810

Going ahead to step 3:
810 goes into 781 0 times with a remainder of 781.
The next digit of our result is 0. 
Result so far: 0.0
Subtracting 0 from 781 leaves us with 781.
Grab the next digit (0) from the dividend, add it to 781, then carry on: 7810 / 810

Moving on to step 4:
7810 divided by 810 is 9 with a remainder of 520.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we subtract 7290 from 7810, we get 520.
Include the next digit (2) from the dividend after 520, then repeat: 5202 / 810

Let's proceed to step 5:
810 goes into 5202 6 times with a remainder of 342.
Write down 6 as next digit of the result. 
Result so far: 96.0
Deduct 4860 from 5202 and we're left with 342.
Append the next digit (4) from the dividend to 342 and continue with: 3424 / 810

Advancing to step 6:
The number 810 fits into 3424 4 times, leaving a remainder of 184.
Write down 4 as next digit of the result. 
Result so far: 964.0
The remainder is 184 after subtracting 3240 from 3424.
Include the next digit (8) from the dividend after 184, then repeat: 1848 / 810

On to step 7:
When dividing 1848 by 810, we get 2 with a remainder of 228.
Put 2 as the next digit of the answer. 
Result so far: 9642.0
If we take 1620 away from 1848, we end up with 228.
Bring next digit (0) of the dividend behind the 228 and repeat the process: 2280 / 810

Advancing to step 8:
The number 810 fits into 2280 2 times, leaving a remainder of 660.
Record the quotient 2 as the next digit in the result. 
Result so far: 96422.0
Subtract 1620 from 2280 to get 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Let's proceed to step 9:
810 goes into 6600 8 times with a remainder of 120.
Use 8 as the next digit of our solution. 
Result so far: 96422.8
Deduct 6480 from 6600 and we're left with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 10:
1200 divided by 810 is 1 with a remainder of 390.
Write down 1 as next digit of the result. 
Result so far: 96422.81
The remainder is 390 after subtracting 810 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Moving on to step 11:
If we divide 3900 by 810, we get 4 and a remainder of 660.
Write down 4 as next digit of the result. 
Result so far: 96422.814
Deduct 3240 from 3900 and we're left with 660.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Advancing to step 12:
The number 810 fits into 6600 8 times, leaving a remainder of 120.
The next digit of our result is 8. 
Result so far: 96422.8148
Subtracting 6480 from 6600 leaves us with 120.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

Let's proceed to step 13:
810 can be fit into 1200 1 times, resulting in a remainder of 390.
Put 1 as the next digit of the answer. 
Result so far: 96422.81481
The remainder is 390 after subtracting 810 from 1200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Moving on to step 14:
The number 810 fits into 3900 4 times, leaving a remainder of 660.
Use 4 as the next digit of our solution. 
Result so far: 96422.814814
The remainder is 660 after subtracting 3240 from 3900.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6600, and continue the process.

Let's proceed to step 15:
810 can be fit into 6600 8 times, resulting in a remainder of 120.
Record the quotient 8 as the next digit in the result. 
Result so far: 96422.8148148
The remainder is 120 after subtracting 6480 from 6600.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1200, and continue the process.

On to step 16:
If we divide 1200 by 810, we get 1 and a remainder of 390.
Put 1 as the next digit of the answer. 
Result so far: 96422.81481481
If we subtract 810 from 1200, we get 390.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3900, and continue the process.

Our division results in 96422.81481481 with a remaining 3.9e-07.