79864253 ÷ 777 
We want to figure out the number of times 79864253 can be divided by 777.

Step 1:
When dividing 7 by 777, we get 0 with a remainder of 7.
The next digit of our result is 0. 
Result so far: 0.0
Subtract 0 from 7 to get 7.
Grab the next digit (9) from the dividend, add it to 7, then carry on: 79 / 777

Going ahead to step 2:
If we divide 79 by 777, we get 0 and a remainder of 79.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 79 to get 79.
Append the next digit (8) from the dividend to 79 and continue with: 798 / 777

Let's proceed to step 3:
If we divide 798 by 777, we get 1 and a remainder of 21.
Use 1 as the next digit of our solution. 
Result so far: 1.0
The remainder is 21 after subtracting 777 from 798.
Include the next digit (6) from the dividend after 21, then repeat: 216 / 777

Let's proceed to step 4:
If we divide 216 by 777, we get 0 and a remainder of 216.
Use 0 as the next digit of our solution. 
Result so far: 10.0
Subtract 0 from 216 to get 216.
Bring next digit (4) of the dividend behind the 216 and repeat the process: 2164 / 777

On to step 5:
777 goes into 2164 2 times with a remainder of 610.
Use 2 as the next digit of our solution. 
Result so far: 102.0
If we subtract 1554 from 2164, we get 610.
Fetch the next digit (2) from the dividend, attach it to 610 and continue: 6102 / 777

Let's proceed to step 6:
777 goes into 6102 7 times with a remainder of 663.
Record the quotient 7 as the next digit in the result. 
Result so far: 1027.0
Deduct 5439 from 6102 and we're left with 663.
Include the next digit (5) from the dividend after 663, then repeat: 6635 / 777

On to step 7:
The number 777 fits into 6635 8 times, leaving a remainder of 419.
Use 8 as the next digit of our solution. 
Result so far: 10278.0
If we take 6216 away from 6635, we end up with 419.
Append the next digit (3) from the dividend to 419 and continue with: 4193 / 777

Let's proceed to step 8:
4193 divided by 777 is 5 with a remainder of 308.
Record the quotient 5 as the next digit in the result. 
Result so far: 102785.0
If we take 3885 away from 4193, we end up with 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Advancing to step 9:
777 goes into 3080 3 times with a remainder of 749.
The number 3 becomes the next digit in our result. 
Result so far: 102785.3
Deduct 2331 from 3080 and we're left with 749.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7490, and continue the process.

Step 10:
7490 divided by 777 is 9 with a remainder of 497.
Write down 9 as next digit of the result. 
Result so far: 102785.39
Deduct 6993 from 7490 and we're left with 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

On to step 11:
4970 divided by 777 is 6 with a remainder of 308.
The number 6 becomes the next digit in our result. 
Result so far: 102785.396
If we subtract 4662 from 4970, we get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

On to step 12:
When dividing 3080 by 777, we get 3 with a remainder of 749.
Write down 3 as next digit of the result. 
Result so far: 102785.3963
The remainder is 749 after subtracting 2331 from 3080.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7490, and continue the process.

Step 13:
7490 divided by 777 is 9 with a remainder of 497.
Use 9 as the next digit of our solution. 
Result so far: 102785.39639
The remainder is 497 after subtracting 6993 from 7490.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

Step 14:
If we divide 4970 by 777, we get 6 and a remainder of 308.
Use 6 as the next digit of our solution. 
Result so far: 102785.396396
Subtract 4662 from 4970 to get 308.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3080, and continue the process.

Advancing to step 15:
The number 777 fits into 3080 3 times, leaving a remainder of 749.
The number 3 becomes the next digit in our result. 
Result so far: 102785.3963963
If we subtract 2331 from 3080, we get 749.
Since there are no more digits in the dividend, we add a zero to the remainder making it 7490, and continue the process.

Advancing to step 16:
If we divide 7490 by 777, we get 9 and a remainder of 497.
Record the quotient 9 as the next digit in the result. 
Result so far: 102785.39639639
Subtract 6993 from 7490 to get 497.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4970, and continue the process.

In conclusion, the division gives 102785.39639639 with a balance of 4.97e-07.