We're dividing 77242431 by 102 
We want to divide 77242431 by 102.

On to step 1:
7 divided by 102 is 0 with a remainder of 7.
Use 0 as the next digit of our solution. 
Result so far: 0.0
The remainder is 7 after subtracting 0 from 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 102

Let's proceed to step 2:
When dividing 77 by 102, we get 0 with a remainder of 77.
Write down 0 as next digit of the result. 
Result so far: 0.0
Subtract 0 from 77 to get 77.
Include the next digit (2) from the dividend after 77, then repeat: 772 / 102

Going ahead to step 3:
102 can be fit into 772 7 times, resulting in a remainder of 58.
The number 7 becomes the next digit in our result. 
Result so far: 7.0
If we subtract 714 from 772, we get 58.
Grab the next digit (4) from the dividend, add it to 58, then carry on: 584 / 102

Moving on to step 4:
When dividing 584 by 102, we get 5 with a remainder of 74.
Write down 5 as next digit of the result. 
Result so far: 75.0
If we take 510 away from 584, we end up with 74.
Bring next digit (2) of the dividend behind the 74 and repeat the process: 742 / 102

Going ahead to step 5:
102 goes into 742 7 times with a remainder of 28.
Write down 7 as next digit of the result. 
Result so far: 757.0
Subtracting 714 from 742 leaves us with 28.
Grab the next digit (4) from the dividend, add it to 28, then carry on: 284 / 102

Let's proceed to step 6:
When dividing 284 by 102, we get 2 with a remainder of 80.
Record the quotient 2 as the next digit in the result. 
Result so far: 7572.0
If we subtract 204 from 284, we get 80.
Include the next digit (3) from the dividend after 80, then repeat: 803 / 102

Step 7:
The number 102 fits into 803 7 times, leaving a remainder of 89.
The next digit of our result is 7. 
Result so far: 75727.0
Subtract 714 from 803 to get 89.
Fetch the next digit (1) from the dividend, attach it to 89 and continue: 891 / 102

Advancing to step 8:
If we divide 891 by 102, we get 8 and a remainder of 75.
Record the quotient 8 as the next digit in the result. 
Result so far: 757278.0
Subtracting 816 from 891 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.

Advancing to step 9:
The number 102 fits into 750 7 times, leaving a remainder of 36.
Write down 7 as next digit of the result. 
Result so far: 757278.7
If we take 714 away from 750, we end up with 36.
Since there are no more digits in the dividend, we add a zero to the remainder making it 360, and continue the process.

On to step 10:
360 divided by 102 is 3 with a remainder of 54.
Put 3 as the next digit of the answer. 
Result so far: 757278.73
Subtracting 306 from 360 leaves us with 54.
Since there are no more digits in the dividend, we add a zero to the remainder making it 540, and continue the process.

Moving on to step 11:
102 can be fit into 540 5 times, resulting in a remainder of 30.
The next digit of our result is 5. 
Result so far: 757278.735
If we subtract 510 from 540, we get 30.
Since there are no more digits in the dividend, we add a zero to the remainder making it 300, and continue the process.

Step 12:
102 goes into 300 2 times with a remainder of 96.
The number 2 becomes the next digit in our result. 
Result so far: 757278.7352
Subtract 204 from 300 to get 96.
Since there are no more digits in the dividend, we add a zero to the remainder making it 960, and continue the process.

Moving on to step 13:
The number 102 fits into 960 9 times, leaving a remainder of 42.
Write down 9 as next digit of the result. 
Result so far: 757278.73529
Subtract 918 from 960 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.

Advancing to step 14:
When dividing 420 by 102, we get 4 with a remainder of 12.
Put 4 as the next digit of the answer. 
Result so far: 757278.735294
The remainder is 12 after subtracting 408 from 420.
Since there are no more digits in the dividend, we add a zero to the remainder making it 120, and continue the process.

Advancing to step 15:
The number 102 fits into 120 1 times, leaving a remainder of 18.
Write down 1 as next digit of the result. 
Result so far: 757278.7352941
Deduct 102 from 120 and we're left with 18.
Since there are no more digits in the dividend, we add a zero to the remainder making it 180, and continue the process.

Going ahead to step 16:
102 goes into 180 1 times with a remainder of 78.
Use 1 as the next digit of our solution. 
Result so far: 757278.73529411
The remainder is 78 after subtracting 102 from 180.
Since there are no more digits in the dividend, we add a zero to the remainder making it 780, and continue the process.

The final result is 757278.73529411 with a remainder of 7.8e-08.