We look at the division of 77974762 by 864 
Let's see how many times 864 fits into 77974762.

On to step 1:
If we divide 7 by 864, we get 0 and a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Bring next digit (7) of the dividend behind the 7 and repeat the process: 77 / 864

Advancing to step 2:
The number 864 fits into 77 0 times, leaving a remainder of 77.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
If we take 0 away from 77, we end up with 77.
Bring next digit (9) of the dividend behind the 77 and repeat the process: 779 / 864

Moving on to step 3:
If we divide 779 by 864, we get 0 and a remainder of 779.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 779 leaves us with 779.
Append the next digit (7) from the dividend to 779 and continue with: 7797 / 864

Let's proceed to step 4:
864 goes into 7797 9 times with a remainder of 21.
Put 9 as the next digit of the answer. 
Result so far: 9.0
If we take 7776 away from 7797, we end up with 21.
Append the next digit (4) from the dividend to 21 and continue with: 214 / 864

Let's proceed to step 5:
If we divide 214 by 864, we get 0 and a remainder of 214.
The next digit of our result is 0. 
Result so far: 90.0
The remainder is 214 after subtracting 0 from 214.
Take the next digit (7) from the dividend and append it to 214, then repeat: 2147 / 864

Step 6:
The number 864 fits into 2147 2 times, leaving a remainder of 419.
Record the quotient 2 as the next digit in the result. 
Result so far: 902.0
Subtract 1728 from 2147 to get 419.
Grab the next digit (6) from the dividend, add it to 419, then carry on: 4196 / 864

Step 7:
864 can be fit into 4196 4 times, resulting in a remainder of 740.
The number 4 becomes the next digit in our result. 
Result so far: 9024.0
Deduct 3456 from 4196 and we're left with 740.
Grab the next digit (2) from the dividend, add it to 740, then carry on: 7402 / 864

Advancing to step 8:
7402 divided by 864 is 8 with a remainder of 490.
The next digit of our result is 8. 
Result so far: 90248.0
Subtract 6912 from 7402 to get 490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4900, and continue the process.

Advancing to step 9:
4900 divided by 864 is 5 with a remainder of 580.
Record the quotient 5 as the next digit in the result. 
Result so far: 90248.5
Subtract 4320 from 4900 to get 580.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5800, and continue the process.

Step 10:
864 can be fit into 5800 6 times, resulting in a remainder of 616.
The number 6 becomes the next digit in our result. 
Result so far: 90248.56
If we take 5184 away from 5800, we end up with 616.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6160, and continue the process.

Moving on to step 11:
The number 864 fits into 6160 7 times, leaving a remainder of 112.
The next digit of our result is 7. 
Result so far: 90248.567
Subtracting 6048 from 6160 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Let's proceed to step 12:
864 goes into 1120 1 times with a remainder of 256.
The next digit of our result is 1. 
Result so far: 90248.5671
If we take 864 away from 1120, we end up with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

On to step 13:
864 goes into 2560 2 times with a remainder of 832.
Use 2 as the next digit of our solution. 
Result so far: 90248.56712
Subtracting 1728 from 2560 leaves us with 832.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8320, and continue the process.

Let's proceed to step 14:
8320 divided by 864 is 9 with a remainder of 544.
Write down 9 as next digit of the result. 
Result so far: 90248.567129
The remainder is 544 after subtracting 7776 from 8320.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5440, and continue the process.

Step 15:
864 goes into 5440 6 times with a remainder of 256.
Put 6 as the next digit of the answer. 
Result so far: 90248.5671296
Deduct 5184 from 5440 and we're left with 256.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2560, and continue the process.

Step 16:
864 can be fit into 2560 2 times, resulting in a remainder of 832.
The next digit of our result is 2. 
Result so far: 90248.56712962
If we take 1728 away from 2560, we end up with 832.
Since there are no more digits in the dividend, we add a zero to the remainder making it 8320, and continue the process.

After the division, we end up with 90248.56712962 and a remainder of 8.32e-07.