We look at the division of 78802101 by 777 
We want to divide 78802101 by 777.

Going ahead to step 1:
777 can be fit into 7 0 times, resulting in a remainder of 7.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Grab the next digit (8) from the dividend, add it to 7, then carry on: 78 / 777

Advancing to step 2:
If we divide 78 by 777, we get 0 and a remainder of 78.
Use 0 as the next digit of our solution. 
Result so far: 0.0
Subtracting 0 from 78 leaves us with 78.
Fetch the next digit (8) from the dividend, attach it to 78 and continue: 788 / 777

Going ahead to step 3:
If we divide 788 by 777, we get 1 and a remainder of 11.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 777 from 788, we get 11.
Fetch the next digit (0) from the dividend, attach it to 11 and continue: 110 / 777

On to step 4:
777 can be fit into 110 0 times, resulting in a remainder of 110.
Write down 0 as next digit of the result. 
Result so far: 10.0
Subtract 0 from 110 to get 110.
Fetch the next digit (2) from the dividend, attach it to 110 and continue: 1102 / 777

On to step 5:
When dividing 1102 by 777, we get 1 with a remainder of 325.
The number 1 becomes the next digit in our result. 
Result so far: 101.0
Subtracting 777 from 1102 leaves us with 325.
Append the next digit (1) from the dividend to 325 and continue with: 3251 / 777

Going ahead to step 6:
777 can be fit into 3251 4 times, resulting in a remainder of 143.
The next digit of our result is 4. 
Result so far: 1014.0
If we take 3108 away from 3251, we end up with 143.
Fetch the next digit (0) from the dividend, attach it to 143 and continue: 1430 / 777

On to step 7:
If we divide 1430 by 777, we get 1 and a remainder of 653.
Use 1 as the next digit of our solution. 
Result so far: 10141.0
Deduct 777 from 1430 and we're left with 653.
Fetch the next digit (1) from the dividend, attach it to 653 and continue: 6531 / 777

On to step 8:
When dividing 6531 by 777, we get 8 with a remainder of 315.
Write down 8 as next digit of the result. 
Result so far: 101418.0
If we subtract 6216 from 6531, we get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

On to step 9:
The number 777 fits into 3150 4 times, leaving a remainder of 42.
Write down 4 as next digit of the result. 
Result so far: 101418.4
The remainder is 42 after subtracting 3108 from 3150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Step 10:
420 divided by 777 is 0 with a remainder of 420.
Use 0 as the next digit of our solution. 
Result so far: 101418.4
If we subtract 0 from 420, we get 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

On to step 11:
4200 divided by 777 is 5 with a remainder of 315.
The next digit of our result is 5. 
Result so far: 101418.405
Subtract 3885 from 4200 to get 315.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

On to step 12:
3150 divided by 777 is 4 with a remainder of 42.
Record the quotient 4 as the next digit in the result. 
Result so far: 101418.4054
The remainder is 42 after subtracting 3108 from 3150.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Advancing to step 13:
777 goes into 420 0 times with a remainder of 420.
Record the quotient 0 as the next digit in the result. 
Result so far: 101418.4054
If we take 0 away from 420, we end up with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

Let's proceed to step 14:
When dividing 4200 by 777, we get 5 with a remainder of 315.
The next digit of our result is 5. 
Result so far: 101418.405405
The remainder is 315 after subtracting 3885 from 4200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3150, and continue the process.

Going ahead to step 15:
If we divide 3150 by 777, we get 4 and a remainder of 42.
Record the quotient 4 as the next digit in the result. 
Result so far: 101418.4054054
Subtract 3108 from 3150 to get 42.
Since there are no more digits in the dividend, we add a zero to the remainder making it 420, and continue the process.

Moving on to step 16:
420 divided by 777 is 0 with a remainder of 420.
Use 0 as the next digit of our solution. 
Result so far: 101418.4054054
Deduct 0 from 420 and we're left with 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4200, and continue the process.

The final result is 101418.4054054 with a remainder of 4.2e-07.