We're dividing 77169878 by 243 
Our goal is to divide 77169878 by 243.

On to step 1:
243 can be fit into 7 0 times, resulting in a remainder of 7.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 7, we end up with 7.
Include the next digit (7) from the dividend after 7, then repeat: 77 / 243

Let's proceed to step 2:
243 goes into 77 0 times with a remainder of 77.
Put 0 as the next digit of the answer. 
Result so far: 0.0
The remainder is 77 after subtracting 0 from 77.
Grab the next digit (1) from the dividend, add it to 77, then carry on: 771 / 243

Moving on to step 3:
The number 243 fits into 771 3 times, leaving a remainder of 42.
Write down 3 as next digit of the result. 
Result so far: 3.0
The remainder is 42 after subtracting 729 from 771.
Take the next digit (6) from the dividend and append it to 42, then repeat: 426 / 243

Going ahead to step 4:
243 goes into 426 1 times with a remainder of 183.
The number 1 becomes the next digit in our result. 
Result so far: 31.0
If we take 243 away from 426, we end up with 183.
Append the next digit (9) from the dividend to 183 and continue with: 1839 / 243

Moving on to step 5:
The number 243 fits into 1839 7 times, leaving a remainder of 138.
The number 7 becomes the next digit in our result. 
Result so far: 317.0
Subtracting 1701 from 1839 leaves us with 138.
Take the next digit (8) from the dividend and append it to 138, then repeat: 1388 / 243

Let's proceed to step 6:
If we divide 1388 by 243, we get 5 and a remainder of 173.
Put 5 as the next digit of the answer. 
Result so far: 3175.0
Subtracting 1215 from 1388 leaves us with 173.
Grab the next digit (7) from the dividend, add it to 173, then carry on: 1737 / 243

Step 7:
If we divide 1737 by 243, we get 7 and a remainder of 36.
The next digit of our result is 7. 
Result so far: 31757.0
If we take 1701 away from 1737, we end up with 36.
Include the next digit (8) from the dividend after 36, then repeat: 368 / 243

Moving on to step 8:
The number 243 fits into 368 1 times, leaving a remainder of 125.
The next digit of our result is 1. 
Result so far: 317571.0
If we subtract 243 from 368, we get 125.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1250, and continue the process.

Let's proceed to step 9:
243 goes into 1250 5 times with a remainder of 35.
Record the quotient 5 as the next digit in the result. 
Result so far: 317571.5
If we subtract 1215 from 1250, we get 35.
Since there are no more digits in the dividend, we add a zero to the remainder making it 350, and continue the process.

On to step 10:
If we divide 350 by 243, we get 1 and a remainder of 107.
The number 1 becomes the next digit in our result. 
Result so far: 317571.51
Subtracting 243 from 350 leaves us with 107.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1070, and continue the process.

Moving on to step 11:
243 goes into 1070 4 times with a remainder of 98.
Use 4 as the next digit of our solution. 
Result so far: 317571.514
If we take 972 away from 1070, we end up with 98.
Since there are no more digits in the dividend, we add a zero to the remainder making it 980, and continue the process.

Going ahead to step 12:
980 divided by 243 is 4 with a remainder of 8.
Record the quotient 4 as the next digit in the result. 
Result so far: 317571.5144
The remainder is 8 after subtracting 972 from 980.
Since there are no more digits in the dividend, we add a zero to the remainder making it 80, and continue the process.

After the division, we end up with 317571.5144 and a remainder of 8e-05.